کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1330101 1500119 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Physical properties of double perovskite-type barium neodymium osmate Ba2NdOsO6
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی معدنی
پیش نمایش صفحه اول مقاله
Physical properties of double perovskite-type barium neodymium osmate Ba2NdOsO6
چکیده انگلیسی

The crystal, magnetic structures and physical properties of the double perovskite-type barium neodymium osmate Ba2NdOsO6 are investigated through powder X-ray and neutron diffraction, electrical conductivity, magnetic susceptibility, and specific heat measurements. The Rietveld analysis reveals that the Nd and Os ions are arranged with regularity over the six-coordinate B sites in a distorted perovskite ABO3 framework. The monoclinic crystal structure described by space group P21/n (tilt system a−a−c+) becomes more distorted with decreasing temperature from 300 K down to 2.5 K. This compound shows a long-range antiferromagnetic ordering of Os5+ below 65 K. An antiferromagnetic ordering of Nd3+ also occurs at lower temperatures (∼20 K). The magnetic structure is of Type I and the magnetic moments of Nd3+ and Os5+ ions are in the same direction in the ab-plane.

Graphical AbstractThe Magnetic structure of Ba2NdOsO6 is of Type I, and the magnetic moments of the Nd3+ and Os5+ ions are in the same direction in the ab-plane.Figure optionsDownload as PowerPoint slideHighlights
► Crystal structures of Ba2NdOsO6 are determined to be monoclinic below 300 K.
► Its electrical resistivity shows a Mott variable-range hopping behavior with localized carriers.
► An antiferromagnetic ordering of the Os5+moment occurs at 65 K.
► The magnetic structure of Ba2NdOsO6 is determined to be of Type I.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Solid State Chemistry - Volume 197, January 2013, Pages 236–241
نویسندگان
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