Structural transformation and ferroelectromagnetic behavior in single-phase Bi1-xNdxFeO3 multiferroic ceramics

被引：477

作者：

Yuan, G. L.

Or, Siu Wing

Liu, J. M.

Liu, Z. G.

机构：

[1] Hong Kong Polytech Univ, Dept Appl Phys, Kowloon, Hong Kong, Peoples R China

[2] Nanjing Univ, Solid State Microstruct Lab, Nanjing 210093, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2006年 / 89卷 / 05期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2266992

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Single-phase Bi1-xNdxFeO3 (BNFOx) (x=0-0.2) multiferroic ceramics were prepared to study the effects of Nd substitution on their crystal structure and ferroelectromagnetic behavior. Rietveld refinement of x-ray diffraction data showed a continual transformation of crystal structure from the rhombohedral structure of BNFOx=0 (BiFeO3) to a triclinic structure in BNFOx=0.05-0.15 and a pseudotetragonal structure in BNFOx=0.175-0.2. Ferroelectromagnetic measurements revealed the existence of ferroelectricity with remnant polarization of similar to 9 mu C/cm(2) in BNFOx=0-0.175, paraelectricity in BNFOx=0.2, and weak ferromagnetism with remnant magnetizations of 0.07-0.227 emu/g in BNFOx=0.15-0.2. Magnetoelectric coupling was obvious in BNFOx=0.15-0.175 near the Neel temperature of similar to 380 degrees C. (c) 2006 American Institute of Physics.

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页数：3

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