In situ high-temperature powder X-ray diffraction study on the spinel   solid solutions (Mg1-xMnx)Cr2O4

doi:10.1007/s00269-011-0474-8

CORC > 北京大学 > 地球与空间科学学院

	In situ high-temperature powder X-ray diffraction study on the spinel solid solutions (Mg1-xMnx)Cr2O4
	Wang, Sicheng ; Liu, Xi ; Fei, Yingwei ; He, Qiang ; Wang, Hejing
刊名	physics and chemistry of minerals
	2012
关键词	Cation redistribution High-T X-ray diffraction (Mg1-xMnx)Cr2O4 Thermal expansion Spinel solid solutions EQUATION-OF-STATE THERMAL-EXPANSION CATION DISTRIBUTION MNCR2O4 SPINEL CRYSTAL-STRUCTURES PHASE-TRANSITION SOLUTION SERIES ORDER-DISORDER MGAL2O4 MANGANESE
DOI	10.1007/s00269-011-0474-8
英文摘要	Using a conventional high-T furnace, the solid solutions between magnesiochromite and manganochromite, (Mg1-x Mn (x) )Cr2O4 with x = 0.00, 0.19, 0.44, 0.61, 0.77 and 1.00, were synthesized at 1,473 K for 48 h in open air. The ambient powder X-ray diffraction data suggest that the V-x relationship of the spinels does not show significant deviation from the Vegard's law. In situ high-T powder X-ray diffraction measurements were taken up to 1,273 K at ambient pressure. For the investigated temperature range, the unit-cell parameters of the spinels increase smoothly with temperature increment, indicating no sign of cation redistribution between the tetrahedral and octahedral sites. The V-T data were fitted with a polynomial expression for the volumetric thermal expansion coefficient alpha(T) = a(0) + a(1)T + a(2)T(-2)), which yielded insignificant a (2) values. The effect of the composition on a (0) is adequately described by the equation a (0) = [17.7(8) - 2.4(1) x] 10(-6) K-1, whereas that on a (1) by the equation a (1) = [8.6(9) + 2.1(11) x] 10(-9) K-2.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000300780300002&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Materials Science, Multidisciplinary; Mineralogy; SCI(E); EI; 7; ARTICLE; 3; 189-198; 39
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/155721]
专题	地球与空间科学学院
推荐引用方式 GB/T 7714	Wang, Sicheng,Liu, Xi,Fei, Yingwei,et al. In situ high-temperature powder X-ray diffraction study on the spinel solid solutions (Mg1-xMnx)Cr2O4[J]. physics and chemistry of minerals,2012.
APA	Wang, Sicheng,Liu, Xi,Fei, Yingwei,He, Qiang,&Wang, Hejing.(2012).In situ high-temperature powder X-ray diffraction study on the spinel solid solutions (Mg1-xMnx)Cr2O4.physics and chemistry of minerals.
MLA	Wang, Sicheng,et al."In situ high-temperature powder X-ray diffraction study on the spinel solid solutions (Mg1-xMnx)Cr2O4".physics and chemistry of minerals (2012).