采用溶胶-凝胶法制备了YFeO3陶瓷粉末并研究了烧结温度对YFeO3结构的影响.XRD表明,当烧结温度达850℃以上,可形成具有正交钙钛矿结构的YFeO3.室温磁滞回线测量表明,YFeO3具有弱铁磁性,并在H=0kA/m处出现突变,这是由YFeO3的磁各向异性引起的.εr-T曲线和D-T曲线表明在40～300K之间YFeO3的介电常数随温度升高而增加,并表现出频率色散现象,同时YFeO3存在低温介电弛豫行为.当外加0.8T的磁场时,介电测量表明YFeO3具有磁介电效应,最大值可达35.11％.
参考文献
| [1] | 王克锋,刘俊明,王雨.单相多铁性材料--极化和磁性序参量的耦合与调控[J].科学通报,2008(10):1098-1135. |
| [2] | Martin, L.W.;Chu, Y.-H.;Ramesh, R. .Advances in the growth and characterization of magnetic, ferroelectric, and multiferroic oxide thin films[J].Materials Science & Engineering, R. Reports: A Review Journal,2010(4/6):89-133. |
| [3] | G. Catalan .Magnetocapacitance without magnetoelectric coupling[J].Applied physics letters,2006(10):102902-1-102902-3-0. |
| [4] | Zhai J Z;Cai N;Shi Z et al.Magnetic-dielectric properties of NiFe2O4/PZT particulate composites[J].Journal of Physics D:Applied Physics,2004,37:823-827. |
| [5] | N. Hur;S. Park;P. A. Sharma;S. Guha;S-W. Cheong .Colossal Magnetodielectric Effects in DyMn_2O_5[J].Physical review letters,2004(10):107207.1-107207.4. |
| [6] | Nicola A. Hill .Why Are There so Few Magnetic Ferroelectrics?[J].The journal of physical chemistry. B, Materials, Surfaces, Interfaces & Biophysical,2000(29):6694-6709. |
| [7] | 周超超,陈长乐,罗炳成,谭兴毅,宋贵芝.Bi1-xBaxFe1-yMnyO3陶瓷的磁性和介电性研究[J].功能材料,2010(06):1012-1014,1018. |
| [8] | Kimura T.;Kawamoto S.;Yamada I.;Azuma M.;Takano M.;Tokura Y. .Magnetocapacitance effect in multiferroic BiMnO3 - art. no. 180401[J].Physical review. B, Condensed Matter And Materials Physics,2003(18):401-0. |
| [9] | 王唯诚,李硕,温怡芸,龚茂初,张磊,姚艳玲,陈耀强.TiO2/YFeO3复合光催化剂的制备、表征及其对气相苯的降解[J].物理化学学报,2008(10):1761-1766. |
| [10] | Sanjay Mathur;Michael Veith;Rasa Rapalaviciute;Hao Shen;Gerardo F.Goya;Waldir L.Martins Filho;Thelma S.Berquo .Molecule Derived Synthesis of Nanocrystalline YFeO_3 and Investigations on Its Weak Ferromagnetic Behavior[J].Chemistry of Materials,2004(10):1906-1913. |
| [11] | Ma Y;Chen X M;Lin Y Q .Relaxorlike dielectric behavior and weak ferromagnetism in YFeO3 ceramics[J].Journal of Applied Physics,2008,103:124111. |
| [12] | Treves D .Studies on orthoferrites at the weizmann institute of science[J].Journal of Applied Physics,1965,36:1033-1039. |
| [13] | Negative temperature coefficient thermistor based on Bi_(3)Zn_(2)Sb_(3)O_(14) ceramic: An oxide semiconductor at high temperature[J].Applied physics letters,2003(14):2284-2286. |
| [14] | Chao Zhang;Jie Su;Xiaofei Wang .Study on magnetic and dielectric properties of YMnO_3 ceramics[J].Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics,2011(29):7738-7741. |
| [15] | Huang S M;Stott A L;Green R G et al.Electronic transducers for industrial measurement of low value capacitances[J].Journal of Physics E:Scientific Instruments,1988,21:242-250. |
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