Enhanced ferromagnetism and microwave absorption properties of BiFeO3 nanocrystals with Ho substitution

被引：82

作者：

Hou, Zhi-Ling ^{[1
]}

Zhou, Hai-Feng ^{[1
]}

Kong, Ling-Bao ^{[1
]}

Jin, Hai-Bo ^{[2
]}

Qi, Xin ^{[1
]}

Cao, Mao-Sheng ^{[2
]}

机构：

[1] Beijing Univ Chem Technol, Sch Sci, Beijing 100029, Peoples R China

[2] Beijing Inst Technol, Sch Mat Sci & Engn, Beijing 100081, Peoples R China

来源：

MATERIALS LETTERS | 2012年 / 84卷

基金：

中国国家自然科学基金;

关键词：

Microwave absorption; BiFeO3; Nanoparticles; Multiferroic; Sol-gel; Substitution; COMPLEX PERMITTIVITY; PERMEABILITY;

D O I：

10.1016/j.matlet.2012.06.050

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ho doped BiFeO3 nanoparticles were synthesized by a sot-gel method, and their magnetic and microwave absorption properties were investigated. X-ray diffraction pattern shows that Ho ions occupy the Bi site in BiFeO3. The Ho substitution is found to enhance ferromagnetic properties, which attributed to the destruction of spin cycloid structure and the emergence of exchange interaction between Ho 4f electrons and Fe 3d electrons. Microwave magnetic loss also shows an obvious increase in the range of 2-18 GHz for high level substitution, caused mainly by the natural ferromagnetic resonance at microwave frequencies. Furthermore, microwave absorbing bandwidth and intensity are greatly improved due to the better electromagnetic match property of BiFeO3 with Ho substitution. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：110 / 113

页数：4

共 15 条

[1] Ferroelectric-Paraelectric Transition in BiFeO3: Crystal Structure of the Orthorhombic β Phase [J].

Arnold, Donna C. ;

Knight, Kevin S. ;

Morrison, Finlay D. ;

Lightfoot, Philip .

PHYSICAL REVIEW LETTERS, 2009, 102 (02)

[2] PHYSICAL INTERPRETATION OF EDDY-CURRENT LOSSES IN FERROMAGNETIC MATERIALS .1. THEORETICAL CONSIDERATIONS [J].

BERTOTTI, G .

JOURNAL OF APPLIED PHYSICS, 1985, 57 (06) :2110-2117

[3] Fabrication and microwave absorption of carbon nanotubes/CoFe2O4 spinel nanocomposite -: art. no. 033105 [J].

Che, RC ;

Zhi, CY ;

Liang, CY ;

Zhou, XG .

APPLIED PHYSICS LETTERS, 2006, 88 (03) :1-3

[4] Microwave absorption enhancement and complex permittivity and permeability of Fe encapsulated within carbon nanotubes [J].

Che, RC ;

Peng, LM ;

Duan, XF ;

Chen, Q ;

Liang, XL .

ADVANCED MATERIALS, 2004, 16 (05) :401-+

[5] Microwave absorption properties of multiferroic BiFeO3 nanoparticles [J].

Kang, Yu-Qing ;

Cao, Mao-Sheng ;

Yuan, Jie ;

Shi, Xiao-Ling .

MATERIALS LETTERS, 2009, 63 (15) :1344-1346

[6] Effect of Gd substitution on the crystal structure and multiferroic properties of BiFeO3 [J].

Khomchenko, V. A. ;

Shvartsman, V. V. ;

Borisov, P. ;

Kleemann, W. ;

Kiselev, D. A. ;

Bdikin, I. K. ;

Vieira, J. M. ;

Kholkin, A. L. .

ACTA MATERIALIA, 2009, 57 (17) :5137-5145

[7] COMPLEX PERMEABILITY AND PERMITTIVITY AND MICROWAVE-ABSORPTION OF FERRITE-RUBBER COMPOSITE IN X-BAND FREQUENCIES [J].

KIM, SS ;

JO, SB ;

GUEON, KI ;

CHOI, KK ;

KIM, JM ;

CHURN, KS .

IEEE TRANSACTIONS ON MAGNETICS, 1991, 27 (06) :5462-5464

[8] Structural evolution and physical properties of Bi1-xGdxFeO3 ceramics [J].

Li, J. -B. ;

Rao, G. H. ;

Xiao, Y. ;

Liang, J. K. ;

Luo, J. ;

Liu, G. Y. ;

Chen, J. R. .

ACTA MATERIALIA, 2010, 58 (10) :3701-3708

[9] Microwave absorption properties of Fe3O4/CuPc hybrid material with cooperative dual nonlinear dielectric/magnetic resonance [J].

Ma, Zhen ;

Zhao, Rui ;

Yang, Xulin ;

Wei, Junji ;

Meng, Fanbin ;

Liu, Xiaobo .

MATERIALS LETTERS, 2012, 69 :30-33

[10] ATOMIC STRUCTURE OF BIFEO3 [J].

MICHEL, C ;

MOREAU, JM ;

ACHENBAC.GD ;

GERSON, R ;

JAMES, WJ .

SOLID STATE COMMUNICATIONS, 1969, 7 (09) :701-&

← 1 2 →