功能电陶瓷材料CaSrTiMnO6的晶体结构和介电性能

doi:10.7523/j.issn.1002-1175.2013.03.007

中国科学院大学学报 ›› 2013, Vol. 30 ›› Issue (3): 322-328.DOI: 10.7523/j.issn.1002-1175.2013.03.007

功能电陶瓷材料CaSrTiMnO₆的晶体结构和介电性能

闫孟¹, 谭艳清¹, 肖小玲¹, 胡中波¹, 武梅梅², 陈东风²

1. 中国科学院研究生院, 北京 100049;
2. 中国原子能研究院, 北京 102413

收稿日期:2012-04-17 修回日期:2012-05-09 发布日期:2013-05-15
通讯作者: CHEN Dong-Feng, E-mail:dongfeng@ciae.ac.cn
基金资助:
Supported by National 973 Project of China (2010CB833100) and National Natural Science Foundation of China (11105159,11075220)

Crystal structure and dielectric properties of functional electronic ceramic CaSrTiMnO₆

YAN Meng¹, TAN Yan-Qing¹, XIAO Xiao-Ling¹, HU Zhong-Bo¹, WU Mei-Mei², CHEN Dong-Feng²

1. Graduate University, Chinese Academy of Sciences, Beijing 100049, China;
2. China Institute of Atomic Energy, Beijing 102413, China

Received:2012-04-17 Revised:2012-05-09 Published:2013-05-15

摘要/Abstract

摘要：

利用传统固相烧结法制备功能介电陶瓷材料CaSrTiMnO₆ (CSTM). 里瓦尔德精修结果表明,该陶瓷具有单钙钛矿结构,属于pnma空间群. 在CSTM陶瓷的介电谱图中,只出现了一个介电弛豫峰,本文利用混价结构机理和归一化键长理论很好地解释了这种现象. 在333～453 K的温度区间内,介电常数在低频下稳定地保持在4 000左右. 这种性质说明该陶瓷材料在高温低频下具有很大的实际应用潜力.

关键词: 钙钛矿, X射线衍射, 里瓦尔德精修, 介电性能

Abstract:

CaSrTiMnO₆(CSTM) dielectric ceramic was synthesized by the solid-state reaction method. Rietveld refinement results indicate that the ceramic has orthorhombic structure with space group pnma. Only one dielectric relaxation was found in CSTM ceramic, and it can be well explained by the mixed-valent structure (Mn³⁺/Mn⁴⁺) and normalized bond length theory. Within a temperature range from 333 K to 453 K, the value of dielectric constant was nearly stabilized at 4 000 in low frequencies, which suggests its wide potential application in the field of high-temperature and low-frequency dielectric devices.

Key words: perovskites, X-ray methods, Rietveld refinement, dielectric properties

中图分类号:

TM534.1

闫孟, 谭艳清, 肖小玲, 胡中波, 武梅梅, 陈东风. 功能电陶瓷材料CaSrTiMnO₆的晶体结构和介电性能[J]. 中国科学院大学学报, 2013, 30(3): 322-328.

YAN Meng, TAN Yan-Qing, XIAO Xiao-Ling, HU Zhong-Bo, WU Mei-Mei, CHEN Dong-Feng. Crystal structure and dielectric properties of functional electronic ceramic CaSrTiMnO₆[J]. , 2013, 30(3): 322-328.

参考文献

[1] Zhu W M, Ye Z G. Effects of chemical modification on the electrical properties of 0.67BiFeO(3)-0.33PbTiO(3) ferroelectric ceramics[J]. Ceram Int, 2004, 30: 1435-1442.

[2] Ikeda N, Ohsumi H, Ohwada K, et al. Ferroelectricity from iron valence ordering in the charge-frustrated system LuFe₂O₄[J]. Nature, 2005, 436: 1136-1138.

[3] Kumar M, Garg A, Kumar R, et al. Structural, dielectric and ferroelectric study of Ba0.9Sr0.1ZrxTi1-xO3 ceramics prepared by the sol gel method[J]. Physica B, 2008, 403: 1819-1823.

[4] Jana P K, Sarkar S, Chaudhuri B K. Maxwell-Wagner polarization mechanism in potassium and titanium doped nickel oxide showing giant dielectric permittivity[J]. J Phys D Appl Phys, 2007, 40: 556-560.

[5] Thongbai P, Yamwong T, Maensiri S. Correlation between giant dielectric response and electrical conductivity of CuO ceramic[J]. Solid State Commun, 2008, 147: 385-387.

[6] Chen X M, Liu P, Zhou J P, et al. Microstructure, dielectric and ferroelectric properties of 0.94Bi_0.5Na_0.5TiO₃-0.06BaTiO₃ (NBTB) and 0.05BiFeO₃-0.95NBTB ceramics: Effect of sintering atmosphere[J]. Physica B, 2010, 405: 2815-2819.

[7] Sundaresan A, Mangalam R V K, Suard E, et al. Crystal structure and dielectric properties of ordered perovskites Ba₂BiSbO₆ and BaSrBiSbO₆[J]. Physica B, 2009, 404: 154-157.

[8] Kim T H, Ko J H, Kim S B, et al. Ferroelectric phase transitions studied by dielectric and light scattering spectroscopies on Ba_1-xCa_xTiO₃ single crystals (x=0.12, 0.20)[J]. Ceram Int, 2012, 38: S21-S24.

[9] Keith G M, Kirk C A, Sarma K, et al. Crystal structure, and characterization of Ba(Ti_1/2Mn_1/2)O₃: A high permittivity 12R-type hexagonal perovskite[J]. Chem Mater, 2004, 16: 2007-2015.

[10] Raevski I P, Prosandeev S A, Bogatin A S, et al. High dielectric permittivity in AFe(1/2)B(1/2)O(3) nonferroelectric perovskite ceramics (A=Ba, Sr, Ca; B=Nb, Ta, Sb)[J]. J Appl Phys, 2003, 93: 4130-4136.

[11] Majhi K, Prakash B S, Varma K B R. Extreme values of relative permittivity and dielectric relaxation in Sr₂SbMnO₆ ceramics[J]. J Phys D Appl Phys, 2007, 40: 7128-7135.

[12] Shi C Y, Hao Y M, Hu Z B. Microstructure and colossal dielectric behavior of Ca(2)TiMnO(6) ceramics[J]. Scripta Mater, 2011, 64: 272-275.

[13] Lin Y Q, Chen X M, Liu X Q. Relaxor-like dielectric behavior in La(2)NiMnO(6) double perovskite ceramics[J]. Solid State Commun, 2009, 149: 784-787.

[14] Lin Y Q, Chen X M. Dielectric relaxation and polaronic conduction in double perovskite La(2)MgMnO(6)[J]. Appl Phys Lett, 2010, 96: 142902-142905.

[15] Lin Y Q, Chen X M. Dielectric, ferromagnetic characteristics, and room-temperature magnetodielectric effects in double perovskite La(2)CoMnO(6) ceramics[J]. J Am Ceram Soc, 2011, 94: 782-787.

[16] Ramirez A P, Subramanian M A, Gardel M, et al. Giant dielectric constant response in a copper-titanate[J]. Solid State Commun, 2000, 115: 217-220.

[17] Chakravarty D, Singh P, Singh S, et al. Electrical conduction behavior of high dielectric constant perovskite oxide La_xCa_1-3x/2Cu₃Ti₄O₁₂[J]. J Alloy Compd, 2007, 438: 253-257.

[18] Zang G, Zhang J, Zheng P, et al. Grain boundary effect on the dielectric properties of CaCu₃Ti₄O₁₂ ceramics[J]. Journal of Physics D: Applied Physics, 2005, 38: 1824-1827.

[19] Fang T T, Shiau H K. Mechanism for developing the boundary barrier layers of CaCu₃Ti₄O₁₂[J]. J Am Ceram Soc, 2004, 87: 2072-2079.

[20] Yang W Z, Mao M M, Liu X Q, et al. Structure and dielectric relaxation of double-perovskite La(2)CuTiO(6) ceramics[J]. J Appl Phys, 2010, 107: 124102-124106.

[21] Liu Y Y, Chen X M, Liu X Q, et al. Dielectric relaxations in Ca(Fe_1/2Nb_1/2)O₃ complex perovskite ceramics[J]. Appl Phys Lett, 2007, 90: 262904-262907.

[22] Liu Y Y, Chen X M, Liu X Q, et al. Giant dielectric response and relaxor behaviors induced by charge and defect ordering in Sr(Fe_1/2Nb_1/2)O₃ ceramics[J]. Appl Phys Lett, 2007, 90: 192905-192908.

[23] Wang Z, Chen X M, Ni L, et al. Dielectric relaxations in Ba(Fe_1/2Ta_1/2)O₃ giant dielectric constant ceramics[J]. Appl Phys Lett, 2007, 90: 102905-102908.

[24] Mahato R N, Sethupathi K, Sankaranarayanan V. Colossal magnetoresistance in the double perovskite oxide La(2)CoMnO(6)[J]. J Appl Phys, 2010, 107: 09D714-09D717.

[25] Burnus T, Hu Z, Hsieh H H, et al. Local electronic structure and magnetic properties of LaMn(0.5)Co(0.5)O(3) studied by X-ray absorption and magnetic circular dichroism spectroscopy[J]. Phys Rev B, 2008, 77: 125124-125131.

[26] Shi C Y, Hao Y M, Hu Z B. Structural and magnetic properties of single perovskite Ca(Ti(1/2)Mn(1/2))O(3)[J]. J Magn Magn Mater, 2011, 323: 1973-1976.

[27] Meher K R S P, Varma K B R. Colossal dielectric behavior of semiconducting Sr(2)TiMnO(6) ceramics[J]. J Appl Phys, 2009, 105: 034113-034121.

[28] Palacin M R, Bassas J, Rodriguezcarvajal J, et al. Studies of the formation and reduction of a mixed 3-dimensional perovskite of copper and titanium[J]. Materials Research Bulletin, 1994, 29: 973-980.

[29] Rodríguez-Carvajal J. Recent developments of the program FULLPROF[J]. Newsletter of the Commission on Powder Diffraction, 2001, 26: 12-19.

[30] Liu P P, Zhu X L, Chen X M. Relaxor ferroelectric and magnetic properties of Ba(6)CoNb(9)O(30) ceramics with tungsten bronze structure[J]. J Appl Phys, 2009, 106: 074111-074115.

[31] Shannon R D. Revised effective ionic-radii and systematic studies of interatomic distances in halides and chalcogenides[J]. Acta Crystallogr A, 1976, 32: 751-767.

[32] Shi C Y, Hao Y M, Hu Z B. Structural, magnetic and dielectric properties of La(2-x)Ca(x)NiO(4+delta) (x=0, 0.1, 0.2, 0.3)[J]. J Alloy Compd, 2011, 509: 1333-1337.

[33] Fan X C, Chen X M, Liu X Q. Structural dependence of microwave dlielectric properties of SrRAlO(4) (R=Sm, Nd, La) ceramics: Crystal structure refinement and infrared reflectivity study[J]. Chem Mater, 2008, 20: 4092-4098.

[34] Adams T B, Sinclair D C, West A R. Influence of processing conditions on the electrical properties of CaCu₃Ti₄O₁₂ ceramics[J]. J Am Ceram Soc, 2006, 89: 3129-3135.

[35] Sahu J R, Rao C N R. Beneficial modification of the properties of multiferroic BiFeO₃ by cation substitution[J]. Solid State Sci, 2007, 9: 950-954.

[36] Strohmeier B R, Hercules D M. Surface spectroscopic characterization of Mn/Al₂O₃ catalysts[J]. J Phys Chem-Us, 1984, 88: 4922-4929.

[37] Dicastro V, Polzonetti G, Contini G, et al. Xps study of MnO₂ minerals treated by bioleaching[J]. Surf Interface Anal, 1990, 16: 571-574.

功能电陶瓷材料CaSrTiMnO₆的晶体结构和介电性能

Crystal structure and dielectric properties of functional electronic ceramic CaSrTiMnO₆

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 1

编辑推荐

Metrics

本文评价

访问统计

联系我们