Terahertz magnetic response and high dielectric constant in Ti:SmFeO3 composite ceramics

被引：13

作者：

Fu, Xiaojian ^{[1
]}

Zeng, Xinxi ^{[2
,3
]}

Zhang, Hao Chi ^{[1
]}

Cui, Tie Jun ^{[1
]}

机构：

[1] Southeast Univ, Sch Informat Sci & Engn, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China

[2] Tsinghua Univ, Grad Sch Shenzhen, Div Energy & Environm, Guangzhou 518055, Guangdong, Peoples R China

[3] Tsinghua Univ, Sch Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

MATERIALS LETTERS | 2016年 / 166卷

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Ceramics; Magnetic materials; Terahertz spectroscopy; Enhanced magnetization; Terahertz magnetic resonance; High dielectric constant;

D O I：

10.1016/j.matlet.2015.12.091

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this letter, the macroscopic magnetic properties as well as terahertz magnetic and electric responses of Ti doped SmFeO3 ceramic are thoroughly investigated. It is observed that the magnetization is enhanced for the composite ceramic, indicating that the ferromagnetic moment becomes easier to reorient with the applied field after adding Ti. The antiferromagnetic mode has a blue-shift for the doped sample below 273 K due to the increased anisotropy constant. It is also shown that the terahertz dielectric constants increase about 11% although the Ti concentration is only 1 at%. The composite ceramic with the electromagnetic properties of enhanced magnetism, high dielectric constant, as well as sensitivity of temperature and external field will have potentials for application in magnetic devices, miniaturized and tunable devices. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：235 / 238

页数：4

共 20 条

[1]

Balbashov A. M., 1985, Soviet Physics - JETP, V61, P573

[2] Magnetically tunable wideband microwave filter using ferrite-based metamaterials [J].

Bi, Ke ;

Zhu, Wenting ;

Lei, Ming ;

Zhou, Ji .

APPLIED PHYSICS LETTERS, 2015, 106 (17)

[3] Temperature induced Spin Switching in SmFeO3 Single Crystal [J].

Cao, Shixun ;

Zhao, Huazhi ;

Kang, Baojuan ;

Zhang, Jincang ;

Ren, Wei .

SCIENTIFIC REPORTS, 2014, 4

[4]

Coey J. M. D., 2014, MAGNETISM MAGNETICAL

[5] Material parameter estimation with terahertz time-domain spectroscopy [J].

Dorney, TD ;

Baraniuk, RG ;

Mittleman, DM .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 2001, 18 (07) :1562-1571

[6] Ultralow temperature terahertz magnetic thermodynamics of perovskite-like SmFeO3 ceramic [J].

Fu, Xiaojian ;

Zeng, Xinxi ;

Wang, Dongyang ;

Zhang, Hao Chi ;

Han, Jiaguang ;

Cui, Tie Jun .

SCIENTIFIC REPORTS, 2015, 5

[7] Terahertz spectroscopic observation of spin reorientation induced antiferromagnetic mode softening in DyFeO3 ceramics [J].

Fu, Xiaojian ;

Liu, Xiaoming ;

Zhou, Ji .

MATERIALS LETTERS, 2014, 132 :190-192

[8] Lattice dynamic investigation of Raman and infrared wavenumbers at the zone center of orthorhombic RFeO3 (R = Tb, Dy, Ho, Er, Tm) perovskites [J].

Gupta, HC ;

Singh, MK ;

Tiwari, LM .

JOURNAL OF RAMAN SPECTROSCOPY, 2002, 33 (01) :67-70

[9] Magnetic tuning of electrically resonant metamaterial with inclusion of ferrite [J].

Kang, Lei ;

Zhao, Qian ;

Zhao, Hongjie ;

Zhou, Ji .

APPLIED PHYSICS LETTERS, 2008, 93 (17)

[10] SUBMILLIMETER BACKWARD-WAVE OSCILLATOR SPECTROSCOPY OF THE RARE-EARTH ORTHOFERRITES [J].

KOZLOV, GV ;

LEBEDEV, SP ;

MUKHIN, AA ;

PROKHOROV, AS ;

FEDOROV, IV ;

BALBASHOV, AM ;

PARSEGOV, IY .

IEEE TRANSACTIONS ON MAGNETICS, 1993, 29 (06) :3443-3445

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