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Crystal structure and electrical transport property of KMF3 (M = Mn, Co, and Ni)

Published online by Cambridge University Press:  25 April 2013

S.L. Wang ,
W.L. Li ,
G.F. Wang ,
D.Y. Dong ,
J.J. Shi ,
X.Y. Li ,
P.G. Li  and
W.H. Tang
S.L. Wang
Affiliation:
Center for Optoelectronics Materials and Devices, Department of Physics, Zhejiang Sci-Tech University, Hangzhou, 310018, China
W.L. Li
Affiliation:
Center for Optoelectronics Materials and Devices, Department of Physics, Zhejiang Sci-Tech University, Hangzhou, 310018, China
G.F. Wang
Affiliation:
Center for Optoelectronics Materials and Devices, Department of Physics, Zhejiang Sci-Tech University, Hangzhou, 310018, China
D.Y. Dong
Affiliation:
Center for Optoelectronics Materials and Devices, Department of Physics, Zhejiang Sci-Tech University, Hangzhou, 310018, China
J.J. Shi
Affiliation:
Center for Optoelectronics Materials and Devices, Department of Physics, Zhejiang Sci-Tech University, Hangzhou, 310018, China
X.Y. Li
Affiliation:
Center for Optoelectronics Materials and Devices, Department of Physics, Zhejiang Sci-Tech University, Hangzhou, 310018, China
P.G. Li*
Affiliation:
Center for Optoelectronics Materials and Devices, Department of Physics, Zhejiang Sci-Tech University, Hangzhou, 310018, China School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China
W.H. Tang
Affiliation:
School of Science, Beijing University of Posts and Telecommunications, Beijing, 100876, China
*
a)Author to whom correspondence should be addressed. Electronic mail: [email protected]
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Abstract

The transition metal fluorides KMF3 (M = Mn, Co, and Ni) were synthesized through a simple solution route. The crystal structure, morphology and electrical transport property of the resulting products were investigated. The compound KMF3 crystallizes in a cubic perovskite structure with space group Pm-3m (No. 221). A crystal structure of KMF3 was refined by the Rietveld method based on the X-ray powder diffraction data. The unit-cell parameters are 4.189 46(4), 4.075 58(4), and 4.025 70(2) for KMnF3, KCoF3 and KNiF3, respectively. A metal–insulator transition was observed in temperature-dependent electrical transport characterization in the temperature range from 250 to 280 K for these three compounds, which is considered to be related to spin-exchange in this kind of material.

Keywords

KMF3crystal structureRietveld methodelectrical property
Type
Technical Articles
Information
Powder Diffraction , Volume 28 , Supplement S1 , September 2013 , pp. S3 - S6
Copyright
Copyright © International Centre for Diffraction Data 2013 

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