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Title: Exchange bias effect in Bi{sub 2}Fe{sub 3}AlO{sub 9} ceramics

Abstract

The exchange bias (EB) effect is observed in Bi{sub 2}Fe{sub 3}AlO{sub 9} polycrystalline ceramics. The EB field (H{sub EB}), vertical magnetization shift, and coercive field show a strong dependence on the cooling fields. When a larger applied field is used to measure the hysteresis loop, the EB effect is suppressed. The induced spin-glass-like phase via Al{sup 3+} doping is responsible for the EB effect below the spin-glass temperature (T{sub SG}) of ∼25 K. Moreover, the H{sub EB} varies nonmonotonically with temperature above T{sub SG}, which is interpreted using a random field model with the exchange coupling between ferromagnetic clusters and an antiferromagnetic phase.

Authors:
; ; ; ;
Publication Date:
OSTI Identifier:
22391964
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 105; Journal Issue: 19; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM IONS; ALUMINIUM OXIDES; ANTIFERROMAGNETISM; BISMUTH COMPOUNDS; CERAMICS; COOLING; DOPED MATERIALS; HYSTERESIS; IRON COMPOUNDS; MAGNETIZATION; POLYCRYSTALS; RANDOMNESS; SPIN GLASS STATE

Citation Formats

Huang, S., Shi, L. R., Sun, H. G., Zhu, C. M., Tian, Z. M., and Yuan, S. L., E-mail: yuansl@hust.edu.cn. Exchange bias effect in Bi{sub 2}Fe{sub 3}AlO{sub 9} ceramics. United States: N. p., 2014. Web. doi:10.1063/1.4902110.
Huang, S., Shi, L. R., Sun, H. G., Zhu, C. M., Tian, Z. M., & Yuan, S. L., E-mail: yuansl@hust.edu.cn. Exchange bias effect in Bi{sub 2}Fe{sub 3}AlO{sub 9} ceramics. United States. https://doi.org/10.1063/1.4902110
Huang, S., Shi, L. R., Sun, H. G., Zhu, C. M., Tian, Z. M., and Yuan, S. L., E-mail: yuansl@hust.edu.cn. 2014. "Exchange bias effect in Bi{sub 2}Fe{sub 3}AlO{sub 9} ceramics". United States. https://doi.org/10.1063/1.4902110.
@article{osti_22391964,
title = {Exchange bias effect in Bi{sub 2}Fe{sub 3}AlO{sub 9} ceramics},
author = {Huang, S. and Shi, L. R. and Sun, H. G. and Zhu, C. M. and Tian, Z. M. and Yuan, S. L., E-mail: yuansl@hust.edu.cn},
abstractNote = {The exchange bias (EB) effect is observed in Bi{sub 2}Fe{sub 3}AlO{sub 9} polycrystalline ceramics. The EB field (H{sub EB}), vertical magnetization shift, and coercive field show a strong dependence on the cooling fields. When a larger applied field is used to measure the hysteresis loop, the EB effect is suppressed. The induced spin-glass-like phase via Al{sup 3+} doping is responsible for the EB effect below the spin-glass temperature (T{sub SG}) of ∼25 K. Moreover, the H{sub EB} varies nonmonotonically with temperature above T{sub SG}, which is interpreted using a random field model with the exchange coupling between ferromagnetic clusters and an antiferromagnetic phase.},
doi = {10.1063/1.4902110},
url = {https://www.osti.gov/biblio/22391964}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 19,
volume = 105,
place = {United States},
year = {Mon Nov 10 00:00:00 EST 2014},
month = {Mon Nov 10 00:00:00 EST 2014}
}