Structural, magnetic and dielectric properties of a new double perovskite Pr2CoTiO6

被引：16

作者：

Das, Nibedita ^{[1
]}

Singh, Ripandeep ^{[3
]}

Das, A. ^{[3
]}

Gupta, Laxmi C. ^{[1
]}

Ganguli, Ashok K. ^{[1
,2
]}

机构：

[1] IIT Delhi, Dept Chem, New Delhi 110016, India

[2] Inst Nano Sci & Technol, Sect 24, Mohali 160062, Punjab, India

[3] Bhabha Atom Res Ctr, Solid State Phys Div, Bombay 400085, Maharashtra, India

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 2017年 / 253卷

关键词：

Double perovskites; Rietveld refinement; Magnetic study; Dielectric study; MIXED-METAL OXIDES; ROOM-TEMPERATURE; CRYSTAL; CERAMICS; MAGNETORESISTANCE; SEMICONDUCTOR; PR; CA; BA; LA;

D O I：

10.1016/j.jssc.2017.06.024

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new double perovskite Pr2CoTiO6 has been synthesized by conventional solid state method. The structure of the compound has been investigated through powder x-ray and neutron diffraction techniques. The Rietveld refinement of the structural data shows that the compound crystallizes in the monoclinic structure (S.G. P2(1)/n # 14)). The refined cell parameters are: a = 5.4800(6) (A) over circle, b = 5.6221(6) (A) over circle, c = 7.7700(9) (A) over circle, beta = 89.98(4)degrees. Monoclinic distortion phi associated with the distortion of the CoO6- and TiO6- octahedra is 13.7 degrees. Magnetic measurements down to 4 K show antiferromagnetic-like ordering of the material, T-N similar to 17 K with paramagnetic effective magnetic moment mu(eff) = 6.92 mu(B). At room temperature, the dielectric constant and dielectric loss of Pr2CoTiO6 are 45.5 and 1.2 respectively.

引用

页码：355 / 359

页数：5

共 35 条

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