Reversed exchange-bias effect associated with magnetization reversal in the weak ferrimagnet LuF e0.5 C r0.5 O3

I. Fita; V. Markovich; A. S. Moskvin; A. Wisniewski; R. Puzniak; P. Iwanowski; C. Martin; A. Maignan; Raúl E. Carbonio; M. U. Gutowska; A. Szewczyk; G. Gorodetsky

doi:10.1103/PhysRevB.97.104416

Reversed exchange-bias effect associated with magnetization reversal in the weak ferrimagnet LuF e0.5 C r0.5 O3

I. Fita, V. Markovich, A. S. Moskvin, A. Wisniewski, R. Puzniak, P. Iwanowski, C. Martin, A. Maignan, Raúl E. Carbonio, M. U. Gutowska, A. Szewczyk, G. Gorodetsky

Department of Physics

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33 Scopus citations

Abstract

The exchange-bias (EB) effect with sign reversal was found in LuFe0.5Cr0.5O3 ferrite-chromite, which is a weak ferrimagnet below TN=265K, exhibiting antiparallel orientation of the ferromagnetic (FM) moments of the Fe and Cr sublattices due to opposite sign of the Fe-Cr Dzyaloshinskii vector, as compared to that of the Fe-Fe and Cr-Cr. The weak FM moments of the studied compound compensate each other at temperature Tcomp=230K, leading to the net magnetic moment reversal and to observed negative magnetization, at moderate applied fields, below Tcomp. Both vertical and horizontal shifts from the origin were gotten in the field-cooled magnetization hysteresis loops. The EB sign was found to be positive below Tcomp and negative above Tcomp, with nonmonotonic dependence on cooling field Hcool. It sharply increases at small values of magnetic fields up to Hcool∼1kOe, then remains almost unchanged in the range 1-30 kOe and strongly decreases with further increase of Hcool. This unusual behavior results from the competition of various Dzyaloshinskii-Moriya interactions between Fe3+ and Cr3+ ions.

Original language	English
Article number	104416
Journal	Physical Review B
Volume	97
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevB.97.104416
State	Published - 23 Mar 2018

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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Fita, I., Markovich, V., Moskvin, A. S., Wisniewski, A., Puzniak, R., Iwanowski, P., Martin, C., Maignan, A., Carbonio, R. E., Gutowska, M. U., Szewczyk, A., & Gorodetsky, G. (2018). Reversed exchange-bias effect associated with magnetization reversal in the weak ferrimagnet LuF e0.5 C r0.5 O3. Physical Review B, 97(10), Article 104416. https://doi.org/10.1103/PhysRevB.97.104416

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title = "Reversed exchange-bias effect associated with magnetization reversal in the weak ferrimagnet LuF e0.5 C r0.5 O3",

abstract = "The exchange-bias (EB) effect with sign reversal was found in LuFe0.5Cr0.5O3 ferrite-chromite, which is a weak ferrimagnet below TN=265K, exhibiting antiparallel orientation of the ferromagnetic (FM) moments of the Fe and Cr sublattices due to opposite sign of the Fe-Cr Dzyaloshinskii vector, as compared to that of the Fe-Fe and Cr-Cr. The weak FM moments of the studied compound compensate each other at temperature Tcomp=230K, leading to the net magnetic moment reversal and to observed negative magnetization, at moderate applied fields, below Tcomp. Both vertical and horizontal shifts from the origin were gotten in the field-cooled magnetization hysteresis loops. The EB sign was found to be positive below Tcomp and negative above Tcomp, with nonmonotonic dependence on cooling field Hcool. It sharply increases at small values of magnetic fields up to Hcool∼1kOe, then remains almost unchanged in the range 1-30 kOe and strongly decreases with further increase of Hcool. This unusual behavior results from the competition of various Dzyaloshinskii-Moriya interactions between Fe3+ and Cr3+ ions.",

author = "I. Fita and V. Markovich and Moskvin, {A. S.} and A. Wisniewski and R. Puzniak and P. Iwanowski and C. Martin and A. Maignan and Carbonio, {Ra{\'u}l E.} and Gutowska, {M. U.} and A. Szewczyk and G. Gorodetsky",

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doi = "10.1103/PhysRevB.97.104416",

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AU - Fita, I.

AU - Markovich, V.

AU - Moskvin, A. S.

AU - Wisniewski, A.

AU - Puzniak, R.

AU - Iwanowski, P.

AU - Martin, C.

AU - Maignan, A.

AU - Carbonio, Raúl E.

AU - Gutowska, M. U.

AU - Szewczyk, A.

AU - Gorodetsky, G.

PY - 2018/3/23

Y1 - 2018/3/23

N2 - The exchange-bias (EB) effect with sign reversal was found in LuFe0.5Cr0.5O3 ferrite-chromite, which is a weak ferrimagnet below TN=265K, exhibiting antiparallel orientation of the ferromagnetic (FM) moments of the Fe and Cr sublattices due to opposite sign of the Fe-Cr Dzyaloshinskii vector, as compared to that of the Fe-Fe and Cr-Cr. The weak FM moments of the studied compound compensate each other at temperature Tcomp=230K, leading to the net magnetic moment reversal and to observed negative magnetization, at moderate applied fields, below Tcomp. Both vertical and horizontal shifts from the origin were gotten in the field-cooled magnetization hysteresis loops. The EB sign was found to be positive below Tcomp and negative above Tcomp, with nonmonotonic dependence on cooling field Hcool. It sharply increases at small values of magnetic fields up to Hcool∼1kOe, then remains almost unchanged in the range 1-30 kOe and strongly decreases with further increase of Hcool. This unusual behavior results from the competition of various Dzyaloshinskii-Moriya interactions between Fe3+ and Cr3+ ions.

AB - The exchange-bias (EB) effect with sign reversal was found in LuFe0.5Cr0.5O3 ferrite-chromite, which is a weak ferrimagnet below TN=265K, exhibiting antiparallel orientation of the ferromagnetic (FM) moments of the Fe and Cr sublattices due to opposite sign of the Fe-Cr Dzyaloshinskii vector, as compared to that of the Fe-Fe and Cr-Cr. The weak FM moments of the studied compound compensate each other at temperature Tcomp=230K, leading to the net magnetic moment reversal and to observed negative magnetization, at moderate applied fields, below Tcomp. Both vertical and horizontal shifts from the origin were gotten in the field-cooled magnetization hysteresis loops. The EB sign was found to be positive below Tcomp and negative above Tcomp, with nonmonotonic dependence on cooling field Hcool. It sharply increases at small values of magnetic fields up to Hcool∼1kOe, then remains almost unchanged in the range 1-30 kOe and strongly decreases with further increase of Hcool. This unusual behavior results from the competition of various Dzyaloshinskii-Moriya interactions between Fe3+ and Cr3+ ions.

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Reversed exchange-bias effect associated with magnetization reversal in the weak ferrimagnet LuF e0.5 C r0.5 O3

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