Effect of Gd substitution on ferroelectric and magnetic properties of Bi4Ti3O12

被引：27

作者：

Khomchenko, V. A. ^{[1
]}

Kakazei, G. N. ^{[2
]}

Pogorelov, Y. G. ^{[2
]}

Araujo, J. P. ^{[2
]}

Bushinsky, M. V. ^{[3
]}

Kiselev, D. A. ^{[4
]}

Kholkin, A. L. ^{[4
]}

Paixao, J. A. ^{[1
]}

机构：

[1] Univ Coimbra, Fac Sci & Technol, Dept Phys, CEMDRX, P-3004516 Coimbra, Portugal

[2] Univ Porto, Fac Sci, Dept Phys, IFIMUP, P-4169007 Oporto, Portugal

[3] NAS Belarus, SSPA Sci Pract Mat Res Ctr, Minsk 220072, BELARUS

[4] Univ Aveiro, Dept Ceram & Glass Engn, CICECO, P-3810193 Aveiro, Portugal

来源：

MATERIALS LETTERS | 2010年 / 64卷 / 09期

关键词：

Ceramics; Ferroelectrics; Magnetic materials; Multiferroics;

D O I：

10.1016/j.matlet.2010.02.016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Polycrystalline samples Bi4-xGdxTi3O12 (x=1, 1.5, 2) were investigated by X-ray diffraction, piezoresponse force microscopy and SQUID-magnetometry techniques. Increasing the gadolinium content was shown to suppress the spontaneous polarization in Bi4-xGdxTi3O12, resulting in a polar-to-nonpolar phase transition near x=1.5. In contrast to previous expectations, all these samples were found to be paramagnets. It was thus proven that introducing magnetically-active Gd ions into the lattice of the ferroelectric Aurivillius-type compound should not be considered as an effective way to achieve multiferroic behavior. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1066 / 1068

页数：3

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