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List of Publications

Dr. Edward Della Torre Dr. Marta Pardavi-Horvath
Research areas include:
Future high density magnetic recording: experimental and numerical models
Size and shape dependent effects in magnetism: planar microwave devices
Loss mechanism of microwave ferrites
Small particle magnetism: 2D arrays, magnetic nanocomposites

papers

Papers
141. M. Pardavi-Horvath: "Characterization of nanostructured magnetic materials", MNP conference, San Sebastian, 1998, accepted for publication in J. Magn. Magn. Mat.

138. M. Pardavi-Horvath: "Magnetization process in a 2D array of small magnetic particles" Magn. and Magn. Mater., accepted for publication, to be published, 1999.

140. M. Pardavi-Horvath: "Shape and size effects in nanostructured 2D magnetic systems", MNL conference, Vancouver, 1998, accepted for publication in J. Magn. Magn. Mat.

137. L. Takacs, Robert C. Reno and Martha Pardavi-Horvath: "Mechanochemical transformations in the zinc-magnetite system" Hyperfine Interactions, 112, nn.1-4, 247-250, 1997.

135. M. Pardavi-Horvath: (invited) "A simple experimental Preisach model system" Chapter in "Magnetic Hysteresis in Novel Magnetic Materials" Ed. G.Hadjipanayis, Ch. 1, pp. 165-173, Kluwer Academic Publ., Dordrecht, 1997

133. M. Pardavi-Horvath, Guobao Zheng and G. Vertesy: "Magnetization process in a classical system of Preisach-type particles" Physica B, 233, 287-293, 1997.

132. M. Pardavi-Horvath and Guobao Zheng: "Inhomogeneous internal field distribution in planar microwave ferrite devices" In "Nonlinear Microwave signal processing: Towards a new range of Devices", Ed. R. Marcelli, Ch. 3., pp.41-65, Kluwer Academic Publ., Amsterdam, 1996

131. M. Pardavi-Horvath, Guobao Zheng, G. Vertesy and A. Magni: "Interaction effects in switching of a two-dimensional array of small particles" IEEE Trans. Mag., 32, No.5, 4469, 1996.

127. Symmetry: Natural and Artificial, Proceedings of the 3rd Interdisiciplinary Symmetry Congress and Exhibition, Ed.: Gyorgy Darvas, Denes Nagy and Martha Pardavi-Horvath, SYMMETRION, Budapest, 1995. (Book)

130. Xiaohua Huang and M. Pardavi-Horvath: "Local demagnetizing tensor calculation for rectangular and cylindrical shapes" IEEE Trans. Mag., 32, No.5, 4180, 1996.

129. M. Pardavi-Horvath (invited): "Switching properties of a regular two-dimensional array of small uniaxial particles" IEEE Trans. Mag., 32, No.5, 4458, 1996.

128. Guobao Zheng, M. Pardavi-Horvath, Xiaohua Huang, B. Keszei and J. Vandlik: "Experimental determination of an effective demagnetization factor for non-ellipsoidal geometries" J. Appl. Phys.,79, 5742-5744, 1996.

126. M. Pardavi-Horvath (invited): "Symmetry in Magnetism" Symmetry: Culture and Science, 6, no.1, 29, 1995.

125. M. Pardavi-Horvath and Hyunkyu Kim: "Surface roughness effects on the coercivity of thin film heads", J Korean Magn Soc., 5, 663-666, 1995.

123. Martha Pardavi-Horvath, Laszlo Takacs and Ferenc Cser: "Switching field distribution changes during reaction milling of iron-zinc nanocomposites", IEEE Trans. Mag., 31, 3775, 1995.

122. Martha Pardavi-Horvath and Gabor Vertesy: "Temperature dependence of switching properties of a 2-D array of Preisach-type particles" IEEE Trans. Mag., 31, 2910, 1995.

119. M. Pardavi-Horvath and L.Takacs: "Magnetic Nanocomposites by Reaction Milling" Scripta Metallurgica and Materialia, 33, 1731-1740, 1995.

118. J. A. Jatau, M. Pardavi-Horvath and E. Della-Torre: "Enhanced coercivity due to local anisotropy increase", Appl. Phys., 75, 6106-08, 1994.

117. L. Takacs and M. Pardavi-Horvath: "Nanocomposite formation in the Fe3O4-Zn system by reaction milling", J. Appl. Phys., 75, 5864-66, 1994.

116. M. Pardavi-Horvath and G. Vertesy: "Measurement of the switching properties of a regular 2-D array of Preisach-type particles" IEEE Trans. Magn., 30, 124-127, 1994.

115. Martha Pardavi-Horvath, Edward Della Torre, Ferenc Vajda and Gabor Vertesy: "A variable-variance Preisach model" IEEE Trans. Mag., 29, No.6, 3793-95, 1993.

114. M. Pardavi-Horvath: "Giant Magnetoresistance" in Magnetic Multilayers, Eds: L. H. Bennett and R. E. Watson, World Scientific Publishing Co. PTe. Ltd., Singapore, 1994,355-373.

113. M. Pardavi-Horvath: "Application of Magnetic Multilayers", in Magnetic Multilayers, Eds: L. H. Bennett and R. E. Watson, World Scientific Publishing Co. PTe. Ltd., Singapore, 1994. pp1-18

112. M. Pardavi-Horvath and L. Takacs: "Magnetic properties of copper-magnetite nanocomposites prepared by ball milling" J. Appl. Phys., 73 (10), May 15, 1993.

109. M. Pardavi-Horvath, S. H. Yuan, P. E. Wigen and P. De Gasperis: "Induced high conduction state and photomemory effects in partially compensated Ca2+ substituted yttrium iron garnet" J. Magn. and Magnetic Materials, 119, 205-220, 1993.

108. M. Pardavi-Horvath, A. Thavendrarajah,P. E. Wigen and P. De Gasperis: "Ferrimagnetism of diamagnetically substituted and charge uncompensated yttrium iron garnet" J. Magn. and Magnetic Materials, 119, 193-204, 1993.

107. M. Pardavi-Horvath and L. Takacs: "Iron-alumina nanocomposites prepared by ball-milling" IEEE Trans. Magn., MAG-28, 3186-3188, 1992.

104. L. Takacs and M. Pardavi-Horvath: "Magnetic properties of nanocomposites prepared by mechanical alloying" Proceedings of TMS Meeting, Ed. by R. Shull, San Diego, 1992.

103. E. Della Torre, C. M. Perlov and M. Pardavi-Horvath: "Comparison of coercivity calculations of anisotropy and exchange wells in magnetooptic media" J. Magn. and Magnetic Materials, 104-107, 303-304, 1992.

102. F. Vajda, E. Della Torre and M. Pardavi-Horvath: "Analysis of reversible magnetization-dependent Preisach models for recording media" J. Magn. and Magnetic Materials, 115, 187-189, 1992.

100. M. Pardavi-Horvath, J. Oti, G. Vertesy, E. Kisdi-Koszo, L. H. Bennett and L.J. Swartzendruber: "A Preisach model study of demagnetized states" J. Magn. and Magnetic Materials, 104-107, 313-314, 1992.

99. M. Pardavi-Horvath, L. H. Bennett and L. J. Swartzendruber: "Switching behavior of a Co-Pt multilayer" Proc. 13th Int. Coll. on Magnetic Films and Surfaces, Glasgow, The Institute of Physics, 1991.

97. F. Vajda, J. Oti, M. Pardavi-Horvath and E. Della Torre: "Experimental verification of a vector Preisach model" J. Appl. Phys., 69, 4502, 1991.

96. M. Pardavi-Horvath: "Ceramic Materials for Magnetic Recording", Proc. 7th CIMTEC - World Ceramics Congress, Montecatini Terme. Ed. P. Vincenzini, Elsevier, Amsterdam, 1991.

94. F. Chen, P. DeGasperis, R. Marcelli, M. Pardavi-Horvath: "Wide-band linewidth measurements in yttrium iron garnet films" J. Appl. Phys., 67, 5530, 1990.

92. M. Pardavi-Horvath, L. Bottyan, I, Szucs, P.E. Wigen and M. Gomi: "Mossbauer study of sputtered Bi3Fe5012", J. Magn. Magnetic Materials, 83, 23, 1990.

91. M. Pardavi-Horvath, P.E. Wigen and P. DeGasperis (invited): "Light-induced time-dependent electrical and magnetic effects in charge uncompensated Ca2+:YIG," J. Magn. Magn. Materials, 83, 425, 1990.

89. P.E. Wigen, A. Thavendrarajah, M. Pardavi-Horvath and M. Gomi: "Evidence for partially spin-polarized Bi3+ in Bi3Fe5012", Proc. Mater. Res. Soc., 150, 137, 1989.

88. A. Thavendrarajah, M. Pardavi-Horvath, P.E. Wigen and M. Gomi: "Magnetic properties of sputtered Bi3Fe5012", IEEE Trans. Magn., MAG-25, 4015, 1989.

86. L. Antos, M. Pardavi-Horvath, A Cziraki, J. Fidler and P. Skalicky : "Microstructure of yttrium iron garnet thin films and of gadolinium gallium garnet single crystals" J. Crystal Growth, 94, 197, 1989.

85. S.H. Yuan, M. Pardavi-Horvath and P.E. Wigen: "Transient space charge limited current spectroscopy of trap levels in semi-insulating materials" Rev. Sci. Instrum., 59, 2468, 1988.

81. L. Vinokurova, V. Ivanov, E. Kulatov, M. Pardavi-Horvath and E. Svab: "Magnetic ordering of Pt-Fe alloys" Acta Physica Polonica, A76, 381, 1989.

80. L. Vinokurova, V. Ivanov, E. Kulatov, M. Pardavi-Horvath and E. Svab: "Magnetic states’ instability of Pt-Fe alloys" J. de Phys., 49, C8-117, 1988.

79. L. Vinokurova, E. Kulatov, A. Vlasov and M. Pardavi-Horvath: "Electronic and magnetic structure of equiatomic iron-rhodium alloy" J de Phys., 49, C8-99, 1988.

78. M. Pardavi-Horvath, P.E. Wigen and P. DeGasperis: "Magnetization anomalies in Ca2+(Fe4+) doped YIG" J. de Phys., 49, C8-985, 1988.

75. J.S. Gozon, M. Pardavi-Horvath and C. M. Dentan: "Demand and supply of rare earth metals for application in magnetic industry", in Precious and Rare Metal Technology, Precious Metallurgy V., Ed. by A. A. Torma, Elsevier, Amsterdam, 1989. pp. 497-507.

74. P.J. Melling, S.L. Swartz, M. Pardavi-Horvath and E.W. Collings: "Powder preparation and thermal properties of 1-2-3 Y Ba Cu oxide superconductor", Advances in Cryogenic Engineering (Materials), 34, 1988.

73. E.W.Collings, P.J. Melling, S.L. Swartz, R.D. Smith, J.J. Rayment, M.J. Pechan and M. Pardavi-Horvath: "Magnetic studies of a 1-2-3 (Y,Gd)-Ba-Cu-Oxide superconductor", Advances in Cryogenic Engineering (Materials), 34, 1988.

72. S.H. Yuan, M. Pardavi-Horvath, P.E. Wigen and P. DeGasperis: "The mechanism of the high conduction state in the Ca2+Fe4+:YIG system", J. Appl. Phys., 63, 3306, 1988.

70. M. Pardavi-Horvath, G. Vertesy and P.E. Wigen: "Photomagnetism in Ca2+Fe4+:YIG", Appl. Phys., 63, 3110, 1988.

69. G. Vertesy, M. Pardavi-Horvath, I. Tomas and L. Pust: "Sample size effect in coercivity measurement of epitaxial magnetic garnet films", J. Appl. Phys., 63, 1694, 1988.

66. M. Pardavi-Horvath and P.E. Wigen: (invited) "Defect and impurity related effects in substituted epitaxial YIG crystals", Advances in Magneto-Optics, Proc. Int. Symp. Magneto-Optics, J. Magn. Soc. Japan, 11 S1, 161, 1987.

65. M. Pardavi-Horvath, P.E. Wigen, G. Vertesy and P. DeGasperis: "Magnetic anisotropy and relaxation of Fe4+ and Fe2+ in Ca:YIG and Ge:YIG", IEEE Trans. Magn., MAG-23, 3730, 1987.

64. M.A. Golbazi, E. Della Torre, M. Pardavi-Horvath and M. Torfeh-Isfahani: "A study of coercivity in Ca-Ge substituted epitaxial garnets", IEEE Trans. Magn., MAG-23, 1945, 1987.

63. Z.Q. Han, M. Pardavi-Horvath, P.E. Wigen and P. DeGasperis: "Ferromagnetic resonance spectra in reduced Ca-rich CaGe:YIG film", J. Appl. Phys., 61, 4256, 1987.

62. S.H. Yuan, M. Pardavi-Horvath, P.E. Wigen and P. DeGasperis: "Excitation effects in excess Ca-doped epitaxial CaGe:YIG garnets", J. Appl. Phys., 61, 3552, 1987.

60. M. Pardavi-Horvath and G. Vertesy: "Effect of ion implantation on stripe and bubble domain coercivity", J. Appl. Phys., 59, 2119, 1986.

59. M. Pardavi-Horvath and G. Vertesy: "Temperature dependence of coercivity of epitaxial magnetic garnet films", J. Appl. Phys., 58, 3827, 1985.

58. M. Pardavi-Horvath: "Coercivity of epitaxial magnetic garnet crystals", IEEE Trans. on Magn., MAG-21, 1694, 1985.

52. M. Pardavi-Horvath, A. Cziraki, I. Fellegvari, G. Vertesy, J. Vandlik and B. Keszei: "Origin of coercivity of Ca-Ge substituted YIG crystals", IEEE Trans. Magn. MAG-20, 1123, 1984.

51. A.V. Vlasov, M. Pardavi-Horvath, L.I. Vinokurova and A. Lovas: "Effects of pressure on amorphous Fe25Ni55Si10B10 alloys", J. Magn. Magn. Mat., 41, 116, 1984.

50. M. Pardavi-Horvath, L.I. Vinokurova and V. Yu. Ivanov: "Anisotropy and magnetostriction of Pt-Fe alloys", J. Magn. Magn. Mat., 41, 340, 1984.

49. M. Pardavi-Horvath, M. Balasko and G. Vertesy: "Coercivity contributions in epitaxial garnet layers", J. Magn. Magn. Mat. 41, 315, 1984.

48. M. Pardavi-Horvath: "Microhardness and brittle fracture of garnet single crystals", J. Materials Science, 19, 1159, 1984.

37. M. Pardavi-Horvath and M. Osvay: "Thermoluminescent properties of gadolinium gallium garnet crystals containing Ca2+ impurity", Phys. stat. sol. /a/ 80, K183, 1983.

35. B. Keszei and M. Pardavi-Horvath: "Experimental Modeling of Fluid Flow Pattern of LPE", Conf. Proc. Eur. Meeting on Crystal Growth, Mat. Electronics, A-27, p. 47, Prague, 1982.

34. Lajos Pogany and Martha Pardavi-Horvath: "Magnetic contrast due to interaction between leakage field of magnetic domains and primary electron beam", Proc. of 10th Int. Congress on Electron Microscopy, p. 360 Hamburg, 1982.

33. J.J. Bara, A.T. Pedziwiatr, W. Zarek, M. Pardavi-Horvath, Z. Kucharski and J. Suwalski: "Investigation of Sm6(Mn1-xFex)23 System", J. Magn. and Magn. Mat., 27, No. 1, 32, 1982.

32. N.I. Kulikov, E.T. Kulatov, L.I. Vinokurova and M. Pardavi-Horvath: "Electronic band structure and magnetic order in FeRh", J. Phys. F: Metal Phys., 12, L91, 1982.

31. M. Pardavi-Horvath: "Defects and their avoidance in LPE of garnets", in Progress in Crystal Growth and Characterization vol. 5, 175-220, 1982.

29. L.I. Vinokurova, A.V. Vlasov, N.I. Kulikov and M. Pardavi-Horvath: "Pressure-induced antiferromagnetism in ferromagnetic Fe51.5Rh48.5 alloy", J. Magn. Magn. Mat., 25, 201, 1981.

26. L.W. Zarek, M. Pardavi-Horvath and L.Z. Obuszko: "Magnetic behavior of Sm6Mn23-xFex compounds", J. Magn. Magn. Mat., 21, 47, 1980..

25. L. Vinokurova, V. Ivanov, L. Sagoyan and M. Pardavi-Horvath: "Multiple magnetic phase transitions in order Pt-Fe alloys", J. Magn. Magn. Mat., 15-18, 453, 1980.

23. B. Keszei and M. Pardavi-Horvath: "Coercivity of (YSmCa)(FeGe)5012 LPE films", IEEE Transactions Mag., MAG-14, 605, 1978.

21. A.M. Kadomtseva, V.N. Milov, A.S. Moskvin and M. Pardavi-Horvath: "Compensation of the weak ferromagnetic moment in mixed yttrium orthoferrites-chromites", Fizika tverdogo tela, 20, 817, 1978.

20. M. Pardavi-Horvath, L.I. Vinokurova and A.V. Vlasov: "Magnetic phase transitions in FeRh alloy", Inst. Phys. Conf. Ser. No. 39. Ch. 7. p. 603. London, 1978.

17. L.K. Vinokurova, A.V. Vlasov and M. Pardavi-Horvath: "Pressure effects on magnetic phase transitions in FeRh and FeRhlr alloy", Phys. stat. sol. (6), 78, 353, 1976

16. K.P. Belov, A.M. Kadomtseva, T.L. Ovchinnikova, M.M. Lukina, M. Pardavi-Horvath, A. Timofeeva and E. Svab: "Magnetic and neutron diffraction studies of reorientation transitions in YFe1-xCrx03", Kristallografia, 21, 602, 1976.

13. D. L. Nagy, K. Kulcsar, G. Ritter, H. Spiering, H. Vogel, R. Zimmerman, I. Dezsi and M. Pardavi-Horvath: "Magnetic field induced texture in Mossbauer absorbers", J. Phys. Chem. Solids, 36, 759, 1975.

9. E. Kren, M. Pardavi, Z. Poko, E. Svab and E. Zsoldos: "Study of the spin Reorientation on Co- and Cr -Substituted YFe03", AIP Conf. Proc. No. 10, Part 2. 1603, New York 1973.

8. I. Dezsi, M. Pardavi-Horvath and B. Molnar: "Mossbauer Study of Some Trinuclear Iron Complexes", Chem. Phys. Letters, 22, 384 1973.

3. L. Pal, G. Zimmer, M.P.-Horvath and J. Paitz: "Impurities in antiferromagnets at lattice sites of zero exchange field", J. de Physique, 32, C861, 1971.

2. L. Vinokurova and M. Pardavi-Horvath: "On the Pressure Dependence of the Magnetic Transitions in an Fe-Rh Alloy", Phys. stat. sol. 41, K5, 1970.

1. E.I. Kondorsky, S. Galkina and M. Horvath: "Electrical resistivity and its change in magnetic field in diluted alloys of nickel in copper", Proc. X. Int. Conf. on Low Temperature Physics, Vol. IV, p. 308. Moscow, 1967.

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