List of Publications of Julian Geshev, Ph.D.
Instituto de Física, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil

2019


J.L. Salazar Cuaila, A.M.H. de Andrade, J. Geshev, and M. Gamino, "Correlations between parameters and structure of CuO(111) films grown by RF reactive sputtering at room temperature," Materials Today: Proceedings 14(1) (2019) 164

V.P.C. Limeira, L.C.C.M. Nagamine, J. Geshev, D.R. Cornejo, and F.J. Garanhani, "Misaligned anisotropies in spin-valve films studied through magnetoresistance and magnetization measurements,Journal of Physics: Condensed Matter 31 (2019) 265802
M. Nisar, M.G. Sebag Bernd, L.C.P. da Silva Filho, J. Geshev and G.B. Galland, "Polypropylene/carbon nanotube composites obtained using carbon nanotubes from sawdust," Polymers for Advanced Technologies 30 (2019) 457.

2018


J.B. Salazar, L.G. Pereira, P.L. Grande, J.E. Schmidt, J.A. Schneider, S. Nicolodi, V. Skumryev, A. Harres, P. Steadman, P. Bencok, A. Dobrynin and J. Geshev"Unveiling the mechanisms governing the exchange coupling and coercivity modifications in annealed or ion-irradiated IrMn/Fe/Co and IrMn/NiFe/Co films," Physical Review Applied 10 (2018) 064021.

M. Nisar, M.G.S. Bernd, L.C.P. da Silva Filho, J. Geshev, N.R. de Souza Basso and G.B. Galland, "Polypropylene nanocomposites with electrical and magnetic properties,Journal of Applied Polymer Science 135 (2018) 46820.

J. Geshev"Interaction plots obtained from in-field magnetization instead of remanence measurements," Journal of Magnetism and Magnetic Materials 467 (2018) 135.

M. Nisar, P.S. Thue, C.A. Heck, J.L. Salazar Cuaila, J. Geshev, E.C. Lima, M.M. Jacobi and G.B. Galland, "Synthesis of polyethylene/nickel–carbon stimuli-responsive material under magnetic field at room temperature: effect of the filler on the properties," European Polymer Journal 99 (2018) 378.

M. Gamino, A.M.H. de Andrade, J.L. Salazar Cuaila, J.E. Schmidt, V. Skumryev and J. Geshev"Exchange bias and major coercivity enhancement in strongly-coupled CuO/Co films,Journal of Magnetism and Magnetic Materials 449 (2018) 5.

2017


J.A. De Toro, M. Vasilakaki, S.S. Lee, M.S. Andersson, P.S. Normile, N. Yaacoub, P. Murray, E.H. Sanchez, P. Muñiz, D. Peddis, R. Mathieu, K. Liu, J. Geshev, K.N. Trohidou and J. Nogués, "Remanence plots as a probe of spin disorder in magnetic nanoparticles," Chemistry of Materials 29 (2017) 8258.

H.B. Vasili, B. Casals, R. Cichelero, F. Macià, J. Geshev, P. Gargiani, M. Valvidares, J. Herrero-Martin, E. Pellegrin, J. Fontcuberta and G. Herranz, "Direct observation of multivalent states and 4f3d charge transfer in Ce-doped yttrium iron garnet thin films,Physical Review B 96 (2017) 014433.

M. Nisar, C. Bergmann, J. Geshev, R. Quijada, T. Maraschin, N.R. de Souza Basso, E.G. Barrera and G.B. Galland, "Synthesis of PE/rGO-CNT-Fe nanocomposites with outstanding magnetic and electrical properties," Journal of Applied Polymer Science 134 (2017) 45382.

M. Nisar, C. Bergmann, J. Geshev, R. Quijada and G. Galland, "Synthesis and characterization of polypropylene/iron encapsulated carbon nanotube composites with high magnetic response at room temperature," Polymer 118 (2017) 68.  

2016


G. Salazar-Alvarez, J. Geshev, S. Agramut-Puig, C. Navau, A. Sánchez, J. Sort and J. Nogués, "Tunable high-field magnetization in strongly exchange-coupled freestanding Co/CoO core/shell coaxial nanowires," ACS Applied Materials & Interfaces 8 (2016) 22477.
M. Nisar, C. Bergmann, J. Geshev, R. Quijada and G. Galland, "An efficient approach to the preparation of polyethylene magnetic nanocomposites," Polymer 97 (2016) 131.

Z. Wang, N. Qureshi, S. Yasin, A. Mukhin, E. Ressouche, S. Zherlitsyn, Y. Skourski, J. Geshev, V. Ivanov, M. Gospodinov and V. Skumryev, "Magnetoelectric effect and phase transitions in CuO in external magnetic fields," Nature Communications 7 (2016) 10295.
J.R. Riquelme, C.A. Garzón, C.P. Bergmann, J. Geshev and R. Quijada, "Development of multifunctional polymer nanocomposites with carbon-based hybrid nanostructures synthesized from ferrocene," European Polymer Journal 75 (2016) 200

A. Harres, M. Mikhov, V. Skumryev, A.M.H. de Andrade, J.E. Schmidt and J. Geshev"Criteria for saturated magnetization loop," Journal of Magnetism and Magnetic Materials 402 (2016) 76

2015 


D. Schafer, P.L. Grande, L.G. Pereira, G.M. Azevedo, A. Harres, M.A. de Sousa, F. Pelegrini and J. Geshev"Antiparallel interface coupling evidenced by negative rotatable anisotropy in IrMn/NiFe bilayers," Journal of Applied Physics 117 (2015) 215301.

A. Harres, J. Geshev and V. Skumryev, "Comment on 'Superspin glass mediated giant spontaneous exchange bias in a nanocomposite of BiFeO3-Bi2Fe4O9'," Physical Review Letters 114 (2015) 099703.

2014


M. Gamino, A.M.H. de Andrade, J.E. Schmidt and J. Geshev"Strongly enhanced exchange bias of top-pinned Co/IrMn films with Py spacers," Journal of Physics D: Applied Physics 47 (2014) 475001.
M.V. Abrashev, N.D. Todorov and J. Geshev"Raman spectra of R2O3 (R - rare-earth) sesquioxides with C-type bixbyite crystal structure: a comparative study," Journal of Applied Physics 116 (2014) 103508.

T. Dias, E. Menéndez, H. Liu, C. Van Haesendonck, A. Vantomme, K. Temst, J.E. Schmidt, R. Giulian and J. Geshev"Rotatable anisotropy driven training effects in exchange biased Co/CoO films," Journal of Applied Physics 115 (2014) 243903.

E. Menéndez, T. Dias, J. Geshev, J.F. Lopez-Barbera, J. Nogués, R. Steitz, B.J. Kirby, J.A. Borchers, L.M.C. Pereira, A. Vantomme and K. Temst, "Interdependence between training and magnetization reversal in granular Co-CoO exchange bias systems,Physical Review B 89 (2014) 144407

E. Menéndez, H. Modarresi, T. Dias, J. Geshev, L.M.C. Pereira, K. Temst and A. Vantomme, "Tuning the ferromagnetic-antiferromagnetic interfaces of granular Co-CoO exchange bias systems by annealing," Journal of Applied Physics 115 (2014) 133915

2013


R. Cichelero, A. Harres, K.D. Sossmeier, J.E. Schmidt and J. Geshev"Magnetic interactions in exchange-coupled yet unbiased IrMn/NiCu bilayers,Journal of Physics: Condensed Matter 25 (2013) 426001
A. Harres, R. Cichelero, L.G. Pereira, J.E. Schmidt and J. Geshev"Remanence plots technique extended to exchange bias systems," Journal of Applied Physics 114 (2013) 043902
R. Dutra, D.E. Gonzalez-Chavez, T.L. Marcondes, A.M.H. de Andrade, J. Geshev and R.L. Sommer"Rotatable anisotropy of Ni81Fe19/Ir20Mn80 films: a study using broadband ferromagnetic resonance," Journal of Magnetism and Magnetic Materials 346 (2013) 1

2012


J. Geshev, A. Gündel, I. Zaharieva and J.E. Schmidt, "Edge atoms effects on the perpendicular anisotropy of ultrathin magnetic layers,Applied Physics Letters 101 (2012) 132407.
A. Harres and J. Geshev"A polycrystalline model for magnetic exchange bias,Journal of Physics: Condensed Matter 24 (2012) 326004
K.D. Sossmeier, D. Schafer, A.P.O. Bastos, J.E. Schmidt and J. Geshev, "Tailoring coercivity of unbiased exchange-coupled ferromagnet/antiferromagnet bilayers," Journal of Applied Physics 112 (2012) 013904

S. Nicolodi, L.G. Pereira, A. Harres, G.M. Azevedo, J.E. Schmidt, I. García-Aguilar, N.M. Souza-Neto, C. Deranlot, F. Petroff and J. Geshev, "Negative rotatable anisotropy in IrMn/Cr/Co thin films," Physical Review B 85 (2012) 224438

B. Canto, J. Geshev,  J.E. Schmidt and L.G. Pereira, "Surface morphology and electron transport correlation in thin iron films," Surface Science 606 (2011) 285. 

2011


S. Nicolodi, A Harres, L.G. Pereira, J.E. Schmidt, M.A. de Sousa, F. Pelegrini, A.D.C. Viegas, C. Deranlot, F. Petroff and J. Geshev, "Abrupt suppression of the exchange bias across a non-magnetic insulator spacer," Journal of Applied Physics 110 (2011) 063922
A Harres, S. Nicolodi, L.G. Pereira, J.E. Schmidt, A.D.C. Viegas and J. Geshev, "Effect of short-duration annealing on the exchange bias in IrMn/Co films," Journal of Magnetism and Magnetic Materials 323 (2011) 2398
G.M.B. Castro, L.C.C.M. Nagamine, J. Geshev, E.B. Saitovich and J.E. Schmidt, "Perpendicular exchange bias in IrMn/Pt/[Co/Pt]3 multilayers with cone magnetization," Thin Solid Films 519 (2011) 6591

A Harres and J. Geshev"Athermal training due to exchange and dipolar coupling within a granular model for exchange bias,Journal of Physics: Condensed Matter 23 (2011) 216003

K.D. Sossmeier, L.G. Pereira, J.E. Schmidt and J. Geshev, "Exchange bias in a ferromagnet/antiferromagnet system with TC << TN," Journal of Applied Physics 109 (2011) 083938

D. Schafer, P.L. Grande, L.G. Pereira and J. Geshev, "Ion irradiation effects on the exchange bias in IrMn/Co films," Journal of Applied Physics 109 (2011) 023905

G. Goev, V. Masheva, J. Geshev and and M. Mikhov, "Irreversible susceptibility along a major hysteresis loop," Romanian Journal of Physics 56(1-2) (2011) 158-164. Download

J. Geshev, T. Dias, S. Nicolodi, R. Cichelero, A. Harres, J.J.S. Acuña, L.G. Pereira, J.E. Schmidt, C. Deranlot and F. Petroff, "Role of the uncompensated interface spins in polycrystalline exchange-biased systems," Journal of Physics D: Applied Physics 44 (2011) 095002 

2009


G.M.B. Castro, J. Geshev, J.E. Schmidt, E.B. Saitovich and L.C.C.M. Nagamine, "Cone magnetization state and exchange bias in IrMn/Cu/[Co/Pt]3 multilayers," Journal of Applied Physics 106 (2009) 113922

F. Rigato, J. Geshev, V. Skumryev and J. Fontcuberta, "The magnetization of epitaxial nanometric CoFe2O4(001) layers," Journal of Applied Physics 106 (2009) 113924

R. Cichelero, L.G. Pereira, T. Dias, J.E. Schmidt, C. Deranlot, F. Petroff and J. Geshev"Engineering double-shifted hysteresis loops in Co/IrMn/Cu/Co films," Applied Physics Letters 95 (2009) 112501. 
M. Cougo dos Santos, J. Geshev, L.G. Pereira and J.E. Schmidt, "Magnetic-field-dependent morphology of self-organized Fe on stepped Si(111) surfaces," Journal of Applied Physics 106 (2009) 023904. 
J. Geshev, 'Comment on "Exchange bias in the layered cobaltite Sr1.5Pr0.5CoO4",' Journal of Applied Physics 105 (2009) 066108. 
J. Geshev, S. Nicolodi, R.B. da Silva, J. Nogués, V. Skumryev and M.D. Baró, "Discrimination between coupling and anisotropy fields in exchange-biased bilayers," Journal of Applied Physics 105 (2009) 053903. 

J. Geshev, "Comment on 'Particle size dependent exchange bias and cluster-glass states in LaMn0.7Fe0.3O3'," Journal of Physics: Condensed Matter 21 (2009) 078001. 
2008

D. Schafer, J. Geshev, S. Nicolodi, L.G. Pereira, J.E. Schmidt and P.L. Grande, "Controlled rotation of the exchange-bias direction in IrMn/Cu/Co via ion irradiation," Applied Physics Letters 93 (2008) 042501. 
J. Geshev, 'Comment on "Cluster glass induced exchange biaslike effect in the perovskite cobaltites" [Appl. Phys. Lett. 90, 162515 (2007)],' Applied Physics Letters 93 (2008) 176101. 
J. Geshev, S. Nicolodi, L.G. Pereira, J.E. Schmidt, V. Skumryev, S. Suriñach and M.D. Baró, "Impact of magnetization easy-axis distributions on the ferromagnet-antiferromagnet exchange coupling estimation," Physical Review B 77 (2008) 132407. DOI
L.C.C.M. Nagamine, G.M.B. Castro, J. Geshev, M.N. Baibich, E. B. Saitovitch and J.E. Schmidt, "Magnetoresistance and magnetization studies through a Cu interlayer in spin valves of NiFe/Cu/NiFe/FeMn," Journal of Magnetism and Magnetic Materials 320 (2008) e16DOI
I. L. Graff, J. Geshev, S.R. Teixeira, L. Amaral and A. Traverse, "Atomic level mixing induced by Kr irradiation of FeCo/Cu multilayers," Journal of Applied Physics 103 (2008) 033505. DOI

J. Geshev, L.G. Pereira and V. Skumryev, 'Comment on "Exchange Bias Dependence on Interface Spin alignment in a Ni80Fe20/(Ni,Fe)O thin film'',' Physical Review Letters 100 (2008) 039701.
L.C.C.M. Naganime, J. GeshevJ.B.M. da Cunha, A. Biondo and E.B. Saitovitch, "Magnetic anisotropy of the ultrathin Fe layers in Fe/NiFe/Fe/Cu multilayers and their effect to the magnetoresistance," Thin Solid Films 516 (2008) 1279. DOI
J. Geshev, 'Comment on "Exchange bias and vertical shift in CoFe2O4 nanoparticles" [J. Magn. Magn. Mater. 313 (2007) 266],' Journal of Magnetism and Magnetic Materials 320 (2008) 600.

2007


G. Goev, V. Masheva, M. Mikhov and J. Geshev, "Irreversible susceptibility of initial magnetization curve defined by energy consideration," International Journal of Modern Physics B 21(21) (2007) 3707.
J. Geshev, S. Nicolodi, L.G. Pereira, L.C.C.M. Nagamine, J.E. Schmidt, C. Deranlot, F. Petroff, R.L. Rodríguez-Suárez and A. Azevedo, "Exchange bias through a Cu interlayer in IrMn/Co system," Physical Review B 75 (2007) 214402. DOI
S. Nicolodi, L.C.C.M. Nagamine, A. D. C. Viegas, J.E. Schmidt, L.G. Pereira, C. Deranlot, F. Petroff and J. Geshev, "Copper spacer thickness dependence of the exchange bias in IrMn/Cu/Co ultrathin films," Journal of Magnetism and Magnetic Materials 316 (2007) e97. DOI
G. Goev, V. Masheva, J. Geshev and M. Mikhov, "Irreversible susceptibility of initial magnetization curve," AIP Conference Proceedings 899(1) (2007) 251.
I.L. Graff, A. Traverse, J. Geshev, S.R. Teixeira and L. Amaral, "Magnetic and structural behavior of FeCo/Cu multilayers submitted to Kr irradiation," Nuclear Instruments and Methods in Physics Research B 257 (2007) 424. DOI
P. Migowski, S.R. Teixeira, G. Machado, M.C.M. Alves, J. Geshev and J. Dupont, "Structural and magnetic characterization of Ni nanoparticles synthesized in ionic liquids," Journal of Electron Spectroscopy and Related Phenomena 156-158 (2007) 195. DOI 

2006


L.C.C.M. Nagamine, J.E. Schmidt, M.N. Baibich, E.B. Saitovitch and J. Geshev, "Field-dependent anisotropic magnetoresistance and magnetization measurements of NiFe/FeMn exchange-biased bilayers," Physica B: Condensed Matter 384(1-2) (2006) 132. DOI 
J.G. Borges, P. Prod’homme, F. Maroun, R. Cortès, J. Geshev, J.E. Schmidt and P. Allongue, "Perpendicular anisotropy in electrodeposited Au/Co films," Physica B: Condensed Matter 384(1-2) (2006) 138. DOI 
S. Nicolodi, L.G. Pereira, J.E. Schmidt, L.C.C.M. Nagamine, A.D.C. Viegas, C. Deranlot, F. Petroff and J. Geshev, "Angular dependence of the exchange bias and coercivity of IrMn/Co bilayers," Physica B: Condensed Matter 384(1-2) (2006) 141. DOI 
J. Geshev, M. Cougo dos Santos, L. F. Zagonel, L.G. Pereira and J.E. Schmidt, "Magnetization switching in vicinal (111) iron and cobalt thin films," Physica B: Condensed Matter 384(1-2) (2006) 135. DOI 

2005


M. Carara, K.D. Sossmeier, A.D.C. Viegas, J. Geshev, H. Chiriac and R.L. Sommer, "Study of CoFeSiB glass-covered amorphous microwires under applied stress," Journal of Applied Physics 98(3) (2005) 033902. DOI 
E. Fonda, S.R. Teixeira, J. Geshev, D. Babonneau, F. Pailloux and A. Traverse, "Negative differential magnetization in Ni nanoparticles embedded in Al," Physical Review B 71(18) (2005) 184411. DOI
L.C.C.M. Nagamine, J. Geshev, T. Menegotto, A.A.R. Fernandes, A. Biondo and E.B. Saitovitch, "Ferromagnetic resonance and magnetization studies in exchange-coupled NiFe/Cu/NiFe structures," Journal of Magnetism and Magnetic Materials 288 (2005) 205. DOI 

2004


M. Cougo dos Santos, J. Geshev, L.G. Pereira, M.C.M. Alves, J.E. Schmidt and P. Allongue, "Intralayer coupling in self-organized Fe nanoclusters grown on vicinal Si(111)," Physical Review B  70(10) (2004) 104420. DOI 
J. Geshev, L.G. Pereira and J.E. Schmidt, "Comment on "Thickness dependence of exchange bias and coercivity in a ferromagnetic layer coupled with an antiferromagnetic layer" [J. Appl. Phys. 94,  2529 (2003)],' Journal of Applied Physics 96(3) (2004) 1763.  
C. Driemeier, L.C.C.M. Nagamine, J.E. Schmidt and J. Geshev,"Tuning the antiferromagnetic easy axis direction in exchange bias bilayers," Journal of Magnetism and Magnetic Materials 272-276S (2004) E811. DOI 
A. Staneva, E. Gattef, Y. Dimitriev, M. Mikhov and J. Geshev, "Magnetic materials containing LaSr manganite phase," Solid State Sciences 6(1) (2004) 47. DOI

2003


M. Cougo dos Santos, J. Geshev, D.K. Silva, J.E. Schmidt, L.G. Pereira, R. Hubler and P. Allongue, "Strong dependence of the Fe thin film magnetic anisotropy on the Si(111) substrate preparation," Journal of Applied Physics 94(3) (2003) 1490. DOI
J. Geshev, L.G. Pereira, J.E. Schmidt, L.C.C.M. Nagamine, E. B. Saitovitch and F. Pelegrini, "Frequency dependent exchange bias in NiFe/NiO films," Physical Review B 67(13) (2003) 132401. DOI 

2002


J. Geshev, L.G. Pereira and J.E. Schmidt, "Rotatable anisotropy and coercivity in exchange-bias bilayers," Physical Review B 66(13) (2002) 134432. DOI
J. Geshev, L.G. Pereira and J.E. Schmidt, "Dependence of the ferromagnetic resonance modes on the coupling strength in exchange-coupled trilayer structures," Physica B 320(1-4) (2002) 169. DOI
M.A.S. Boff, J. Geshev, J.E. Schmidt, W.H. Flores, A.B. Antunes, M.A. Gusmão and S.R. Teixeira, "Bias dependence of magnetoresistance in Fe-Al2O3 granular thin films," Journal of Applied Physics 91(12) (2002) 9909. DOI

2001


J. Geshev, L.G. Pereira, J.E. Schmidt and M. Mikhov, "Dependence of the magnetization and remanence of single domain particles on the second cubic anisotropy constant," Journal of Applied Physics 90(12) (2001) 6243. DOI
J. Geshev, L.G. Pereira and J.E. Schmidt, "Angular dependence of the exchange bias obtained from magnetization and ferromagnetic resonance measurements in exchange-coupled bilayers," Physical Review B 64 (2001) 184411. DOI
J. Geshev, A. Morrone and J.E. Schmidt, "Multi-state perpendicular remanence in Co/Pd multilayers," Journal of Magnetism and Magnetic Materials 226-230 (2001) 1711. DOI 

2000


J. Geshev, "Analytical solutions for exchange bias and coercivity in ferromagnetic/antiferromagnetic bilayers," Physical Review B 62(9) (2000) 5627. DOI

M. Cougo dos Santos, J. Geshev, J.E. Schmidt, S.R. Teixeira and L.G. Pereira, "Origin of the magnetization reversal of an Fe thin film on Si(111)," Physical Review B 61(2) (2000) 1311. DOI

1999


J. Geshev, M. Mikhov and J.E. Schmidt, "Remanent magnetization plots of fine particles with competing cubic and uniaxial anisotropies," Journal of Applied Physics 85(10) (1999) 7321. DOI
J. Geshev, A.D.C. Viegas and J.E. Schmidt, " Unusual remanent magnetization of granular Co/Cu," Journal of Magnetism and Magnetic Materials 196(1) (1999) 126. DOI
V. Masheva, M. Grigorova, N. Valkov, H.J. Blythe, T. Midlarz, V. Blaskov, J. Geshev and M. Mikhov , "On the magnetic properties of nanosized CoFe2O4," Journal of Magnetism and Magnetic Materials 196(1) (1999) 128. DOI

J. Geshev, A. D. C. Viegas and J.E. Schmidt, "Anomalous remanence of franular CoCu,” Materials Science Forum 302-303 (1999) 189. DOI 

J. Geshev, Ll. Martinez, J.S. Muñoz, J.E. Schmidt and M. Mikhov, "Evaluation of the anisotropy feld for fine-particle systems from low-field thermomagnetic curves,” IEEE Transactions on Magnetics  35(2) (1999) 1019. DOI 

1998


J. Geshev, A.D.C. Viegas and J.E. Schmidt, "Negative remanent magnetization of fine particles with competing cubic and uniaxial anisotropies," Journal of Applied Physics 84(3) (1998) 1488. DOI
W.H. Flores, S.R. Teixeira, J. Geshev, J.B.M. da Cunha, P.J. Schilling, A. Traverse and M.C. Martins Alves, "Structural evolution and magnetic behaviour of Co/Ag multilayers submitted to thermal annealing," Journal of Magnetism and Magnetic Materials 188(1-2) (1998) 17. DOI
A.D.C. Viegas, J. Geshev, J.E. Schmidt and E.F. Ferrari, "Giant magnetoresistance and remanence in granular CoCu codeposited films," Journal of Applied Physics 83(11) (1998) 7007. DOI

1997


A.D.C. Viegas, J. Geshev, L.S. Dorneles, J.E. Schmidt and M. Knobel, "Correlation between magnetic interactions and giant magnetoresistance in melt-spun Co10Cu90 granular alloys," Journal of Applied Physics 82(6) (1997) 3047. DOI
A.D.C. Viegas, J. Geshev, L.F. Schelp and J.E. Schmidt, "Correlation between giant magnetoresistance and magnetic interactions in a CoAg multilayered/granular system," Journal of Applied Physics 82(5) (1997) 2466. DOI
J. Geshev, L. Bozukov, J.M.D. Coey and M. Mikhov, "Hysteresis of ball-milled TbFe2 fine particles," Journal of Magnetism and Magnetic Materials 170 (1997) 219. DOI 
J. Geshev and J.E. Schmidt, "Interaction fields evaluation in fine particle systems," IEEE Transactions on Magnetics 33(4) (1997) 2504. DOI 

A.D.C. Viegas, J. Geshev, L.S. Dorneles, J.E. Schmidt and M. Knobel, "Giant magnetoresistance and magnetic interactions in granular Co
10Cu90," in:
Magnetic hysteresis in novel magnetic materials, Ed. G.C. Hadjipanayis, (Kluwer Academic Publishers, Dordrecht, The Netherlands, 1997). NATO ASI Series E: Applied Sciences, vol. 338, pp. 413. 

1995


V. Masheva, J. Geshev and M. Mikhov, "The Influence of the second anisotropy constant on the Fourier description of hysteresis loops for a Stoner-Wohlfarth system," Journal of Magnetism and Magnetic Materials 140-144 (1995) 371. DOI 

1994


V. Masheva, J. Geshev and M. Mikhov, "Fourier analysis of magnetization curves," Proc. Suppl. Balkan Physics Letters 2 (1994) 522-526. 
J. Geshev, M. Mikhov and C. Sorensen, "Hopkinson effect in fine particle systems with cubic anisotropy," Proc. Suppl.
Balkan Physics Letters 2 (1994) 330-333.

V. Masheva, J. Geshev and M. Mikhov, "Fourier analysis of hysteresis loops and initial magnetization curves. Application to the singular-point-detection method," Journal of Magnetism and Magnetic Materials 137 (1994) 350. DOI
M. Mikhov, J. Geshev and V. Masheva, "Anisotropy field andi interparticle interactions determined by Fourier analysis of magnetization curves of small particles," in: Nanophase materials, Eds. G.C. Hadjipanayis and R.W. Siegel, (Kluwer Academic Publishers, Dordrecht, The Netherlands, 1994) NATO ASI Series E: Applied Sciences, vol. 260 pp. 699-702. 
J. Geshev, V. Masheva and M. Mikhov, "Interaction effects detected by Fourier analysis of hysteresis loops and iInitial magnetization curves," IEEE Transactions on Magnetics 30(2) (1994) 863. DOI 

1992


J. Geshev, O. Popov, M. Mikhov, J.L. Sanchez Ll., N. Suarez and F. Leccabue, "The Hopkinson effect in a fine BaFe12O19 particle system: demagnetization field effects," Journal of Magnetism and Magnetic Materials 117 (1992) 190. DOI 
J. Geshev and M. Mikhov, "Remanence curves for a disordered system of three- and four-axial fine particles. Henkel-type plots," Journal of Magnetism and Magnetic Materials 104-107 (1992) 1569. DOI 

1990


J. Geshev, O. Popov, V. Masheva and M. Mikhov, "Thermomagnetic curves for a disordered system of single domain ferromagnetic particles with cubic anisotropy," Journal of Magnetism and Magnetic Materials 92 (1990) 185. DOI