Intrinsic nature of the magnetization enhancement in heterovalently doped Bi1-xAxFeO3 (A = Ca, Sr, Pb, Ba) multiferroics

V. A. Khomchenko; M. Kopcewicz; A. M.L. Lopes; Y. G. Pogorelov; J. P. Araujo; J. M. Vieira; A. L. Kholkin

doi:10.1088/0022-3727/41/10/102003

Intrinsic nature of the magnetization enhancement in heterovalently doped Bi_1-xA_xFeO₃ (A = Ca, Sr, Pb, Ba) multiferroics

V. A. Khomchenko
, M. Kopcewicz
, A. M.L. Lopes
, Y. G. Pogorelov
, J. P. Araujo
, J. M. Vieira
, A. L. Kholkin

University of Aveiro
Institute of Microelectronics and Photonics
University of Porto

Research output: Contribution to journal › Article › peer-review

103 Citations (Scopus)

Abstract

The mechanism of the formation of heterovalent-substitution-induced defects as well as their influence on the magnetic properties of BiFeO ₃-based multiferroics has been studied. It has been shown that heterovalent A²⁺ substitution results in the formation of oxygen vacancies in the host lattices of both antiferromagnetic and weak ferromagnetic Bi_1-xA_xFeO₃ (A = Ca, Sr, Pb, Ba; x = 0.2, 0.3) compounds, thus indicating the intrinsic (i.e. not related to defects themselves) mechanism of doping-induced enhancement of magnetization. A correlation between the ionic radius of the substituting element and the value of the spontaneous magnetization of the corresponding solid solution has been found. The experimental results suggest that A-site substitution with the biggest ionic radius ions effectively suppresses the spiral spin configuration of antiferromagnetic BiFeO₃.

Original language	English
Article number	102003
Journal	Journal of Physics D: Applied Physics
Volume	41
Issue number	10
DOIs	https://doi.org/10.1088/0022-3727/41/10/102003
Publication status	Published - 21 May 2008
Externally published	Yes

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10.1088/0022-3727/41/10/102003

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title = "Intrinsic nature of the magnetization enhancement in heterovalently doped Bi1-xAxFeO3 (A = Ca, Sr, Pb, Ba) multiferroics",

abstract = "The mechanism of the formation of heterovalent-substitution-induced defects as well as their influence on the magnetic properties of BiFeO 3-based multiferroics has been studied. It has been shown that heterovalent A2+ substitution results in the formation of oxygen vacancies in the host lattices of both antiferromagnetic and weak ferromagnetic Bi1-xAxFeO3 (A = Ca, Sr, Pb, Ba; x = 0.2, 0.3) compounds, thus indicating the intrinsic (i.e. not related to defects themselves) mechanism of doping-induced enhancement of magnetization. A correlation between the ionic radius of the substituting element and the value of the spontaneous magnetization of the corresponding solid solution has been found. The experimental results suggest that A-site substitution with the biggest ionic radius ions effectively suppresses the spiral spin configuration of antiferromagnetic BiFeO3.",

author = "Khomchenko, \{V. A.\} and M. Kopcewicz and Lopes, \{A. M.L.\} and Pogorelov, \{Y. G.\} and Araujo, \{J. P.\} and Vieira, \{J. M.\} and Kholkin, \{A. L.\}",

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doi = "10.1088/0022-3727/41/10/102003",

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T1 - Intrinsic nature of the magnetization enhancement in heterovalently doped Bi1-xAxFeO3 (A = Ca, Sr, Pb, Ba) multiferroics

AU - Khomchenko, V. A.

AU - Kopcewicz, M.

AU - Lopes, A. M.L.

AU - Pogorelov, Y. G.

AU - Araujo, J. P.

AU - Vieira, J. M.

AU - Kholkin, A. L.

PY - 2008/5/21

Y1 - 2008/5/21

N2 - The mechanism of the formation of heterovalent-substitution-induced defects as well as their influence on the magnetic properties of BiFeO 3-based multiferroics has been studied. It has been shown that heterovalent A2+ substitution results in the formation of oxygen vacancies in the host lattices of both antiferromagnetic and weak ferromagnetic Bi1-xAxFeO3 (A = Ca, Sr, Pb, Ba; x = 0.2, 0.3) compounds, thus indicating the intrinsic (i.e. not related to defects themselves) mechanism of doping-induced enhancement of magnetization. A correlation between the ionic radius of the substituting element and the value of the spontaneous magnetization of the corresponding solid solution has been found. The experimental results suggest that A-site substitution with the biggest ionic radius ions effectively suppresses the spiral spin configuration of antiferromagnetic BiFeO3.

AB - The mechanism of the formation of heterovalent-substitution-induced defects as well as their influence on the magnetic properties of BiFeO 3-based multiferroics has been studied. It has been shown that heterovalent A2+ substitution results in the formation of oxygen vacancies in the host lattices of both antiferromagnetic and weak ferromagnetic Bi1-xAxFeO3 (A = Ca, Sr, Pb, Ba; x = 0.2, 0.3) compounds, thus indicating the intrinsic (i.e. not related to defects themselves) mechanism of doping-induced enhancement of magnetization. A correlation between the ionic radius of the substituting element and the value of the spontaneous magnetization of the corresponding solid solution has been found. The experimental results suggest that A-site substitution with the biggest ionic radius ions effectively suppresses the spiral spin configuration of antiferromagnetic BiFeO3.

UR - https://www.scopus.com/pages/publications/43349095163

U2 - 10.1088/0022-3727/41/10/102003

DO - 10.1088/0022-3727/41/10/102003

M3 - Article

AN - SCOPUS:43349095163

SN - 0022-3727

VL - 41

JO - Journal of Physics D: Applied Physics

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IS - 10

M1 - 102003

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Intrinsic nature of the magnetization enhancement in heterovalently doped Bi_1-xA_xFeO₃ (A = Ca, Sr, Pb, Ba) multiferroics

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