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Title: Room temperature nonlinear magnetoelectric effect in lead-free and Nb-doped AlFeO{sub 3} compositions

Abstract

It is still a challenging problem to obtain technologically useful materials displaying strong magnetoelectric coupling at room temperature. In the search for new effects and materials to achieve this kind of coupling, a nonlinear magnetoelectric effect was proposed in the magnetically disordered relaxor ferroelectric materials. In this context, the aluminum iron oxide (AlFeO{sub 3}), a room temperature ferroelectric relaxor and magnetic spin glass compound, emerges as an attractive lead-free magnetoelectric material along with nonlinear magnetoelectric effects. In this work, static, dynamic, and temperature dependent ferroic and magnetoelectric properties in lead-free AlFeO{sub 3} and 2 at. % Nb-doped AlFeO{sub 3} multiferroic magnetoelectric compositions are studied. Pyroelectric and magnetic measurements show changes in ferroelectric and magnetic states close to each other (∼200 K). The magnetoelectric coefficient behavior as a function of H{sub bias} suggests a room temperature nonlinear magnetoelectric coupling in both single-phase and Nb-doped AlFeO{sub 3}-based ceramic compositions.

Authors:
 [1];  [2]; ;  [3];  [4];  [5]; ; ;  [1]; ;  [6]
  1. Department of Electrical and Computer Engineering, University of Texas at San Antonio, San Antonio, Texas 78249 (United States)
  2. (Brazil)
  3. Department of Physics, State University of Maringá, Maringá – PR 87020-900 (Brazil)
  4. Department of Physics, Universidade Estadual do Centro-Oeste, Guarapuava – PR 85040-080 (Brazil)
  5. Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, Campinas – SP 13083-859 (Brazil)
  6. Department of Physics, Federal University of São Carlos, São Carlos – SP 13565-905 (Brazil)
Publication Date:
OSTI Identifier:
22413093
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 117; Journal Issue: 6; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ALUMINIUM COMPOUNDS; CERAMICS; COUPLING; DOPED MATERIALS; ELECTRICAL PROPERTIES; FERROELECTRIC MATERIALS; IRON OXIDES; MAGNETIC PROPERTIES; NONLINEAR PROBLEMS; SPIN GLASS STATE; TEMPERATURE DEPENDENCE; TEMPERATURE RANGE 0273-0400 K

Citation Formats

Cótica, Luiz F., E-mail: lfcotica@dfi.uem.br, Department of Physics, State University of Maringá, Maringá – PR 87020-900, Santos, Guilherme M., Santos, Ivair A., Freitas, Valdirlei F., Coelho, Adelino A., Pal, Madhuparna, Guo, Ruyan, Bhalla, Amar S., Garcia, Ducinei, and Eiras, José A. Room temperature nonlinear magnetoelectric effect in lead-free and Nb-doped AlFeO{sub 3} compositions. United States: N. p., 2015. Web. doi:10.1063/1.4908016.
Cótica, Luiz F., E-mail: lfcotica@dfi.uem.br, Department of Physics, State University of Maringá, Maringá – PR 87020-900, Santos, Guilherme M., Santos, Ivair A., Freitas, Valdirlei F., Coelho, Adelino A., Pal, Madhuparna, Guo, Ruyan, Bhalla, Amar S., Garcia, Ducinei, & Eiras, José A. Room temperature nonlinear magnetoelectric effect in lead-free and Nb-doped AlFeO{sub 3} compositions. United States. doi:10.1063/1.4908016.
Cótica, Luiz F., E-mail: lfcotica@dfi.uem.br, Department of Physics, State University of Maringá, Maringá – PR 87020-900, Santos, Guilherme M., Santos, Ivair A., Freitas, Valdirlei F., Coelho, Adelino A., Pal, Madhuparna, Guo, Ruyan, Bhalla, Amar S., Garcia, Ducinei, and Eiras, José A. Sat . "Room temperature nonlinear magnetoelectric effect in lead-free and Nb-doped AlFeO{sub 3} compositions". United States. doi:10.1063/1.4908016.
@article{osti_22413093,
title = {Room temperature nonlinear magnetoelectric effect in lead-free and Nb-doped AlFeO{sub 3} compositions},
author = {Cótica, Luiz F., E-mail: lfcotica@dfi.uem.br and Department of Physics, State University of Maringá, Maringá – PR 87020-900 and Santos, Guilherme M. and Santos, Ivair A. and Freitas, Valdirlei F. and Coelho, Adelino A. and Pal, Madhuparna and Guo, Ruyan and Bhalla, Amar S. and Garcia, Ducinei and Eiras, José A.},
abstractNote = {It is still a challenging problem to obtain technologically useful materials displaying strong magnetoelectric coupling at room temperature. In the search for new effects and materials to achieve this kind of coupling, a nonlinear magnetoelectric effect was proposed in the magnetically disordered relaxor ferroelectric materials. In this context, the aluminum iron oxide (AlFeO{sub 3}), a room temperature ferroelectric relaxor and magnetic spin glass compound, emerges as an attractive lead-free magnetoelectric material along with nonlinear magnetoelectric effects. In this work, static, dynamic, and temperature dependent ferroic and magnetoelectric properties in lead-free AlFeO{sub 3} and 2 at. % Nb-doped AlFeO{sub 3} multiferroic magnetoelectric compositions are studied. Pyroelectric and magnetic measurements show changes in ferroelectric and magnetic states close to each other (∼200 K). The magnetoelectric coefficient behavior as a function of H{sub bias} suggests a room temperature nonlinear magnetoelectric coupling in both single-phase and Nb-doped AlFeO{sub 3}-based ceramic compositions.},
doi = {10.1063/1.4908016},
journal = {Journal of Applied Physics},
number = 6,
volume = 117,
place = {United States},
year = {Sat Feb 14 00:00:00 EST 2015},
month = {Sat Feb 14 00:00:00 EST 2015}
}