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

Autor:	P.G. Li, Wei Li, Shunli Wang, J.J. Shi, G. F. Wang, Weihua Tang, D.Y. Dong, Li Xiaoyun
Rok vydání:	2013
Předmět:	Crystallography Radiation Materials science Morphology (linguistics) Electrical transport Transition metal General Materials Science Crystal structure Atmospheric temperature range Condensed Matter Physics Instrumentation Powder diffraction Characterization (materials science)
Zdroj:	Powder Diffraction. 28:S3-S6
ISSN:	1945-7413 0885-7156
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::de42b4e5b24c6e4e6c03adf2a9f7a500 https://doi.org/10.1017/s0885715613000316 Zobrazit plný text záznamu