Compressibilities of MnFe2O4 polymorphs

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	Compressibilities of MnFe2O4 polymorphs
	Ye, LJ; Zhai, SM; Wu, X; Xu, CW; Yang, K; Higo, YJ
刊名	PHYSICS AND CHEMISTRY OF MINERALS
	2015
卷号	42 期号:7 页码:569—577
关键词	HIGH-PRESSURE PHASE EQUATION-OF-STATE RAY-POWDER DIFFRACTION MAGNETITE SPINEL TRANSITION FERRITE CRYSTAL MGAL2O4 GPA
ISSN号	0342-1791
通讯作者	Zhai, SM (reprint author), Chinese Acad Sci, Inst Geochem, Key Lab High Temperature & High Pressure Study Ea, Guiyang 550002, Guizhou, Peoples R China.
英文摘要	The high-pressure behavior and stability of synthetic jacobsite MnFe2O4 have been investigated up to 39.55 GPa at room temperature by means of in situ synchrotron X-ray diffraction using diamond anvil cell and multi-anvil high-pressure apparatus. The MnFe2O4 spinel undergoes a phase transition at about 18 GPa to form a denser antiferromagnetic CaMn2O4-type (CMafm) polymorph. The CMafm MnFe2O4 is stable up to 39.55 GPa in this study and remains after decompression. Fitting the pressure-volume data using a third-order Birch-Murnaghan equation of state, the isothermal bulk modulus values and the first pressure derivatives were obtained as K-0 = 169.7 (35) GPa, K-0' = 2.87 (40) for spinel-type MnFe2O4 and K-0 = 149.2 (24) GPa, K-0' = 3.98 (19) for CMafm MnFe2O4, respectively. If K-0' is fixed to 4, K-0 was obtained as 160.6 (11) GPa for spinel-type MnFe2O4 and 148.9 (7) GPa for CMafm MnFe2O4. The effects of cation substitution on the isothermal bulk modulus and pressure for phase transition of Fe3+-bearing spinels were discussed.
收录类别	SCI
语种	英语
WOS记录号	WOS:000358940200004
公开日期	2016-03-08
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/24886]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
推荐引用方式 GB/T 7714	Ye, LJ,Zhai, SM,Wu, X,et al. Compressibilities of MnFe2O4 polymorphs[J]. PHYSICS AND CHEMISTRY OF MINERALS,2015,42(7):569—577.
APA	Ye, LJ,Zhai, SM,Wu, X,Xu, CW,Yang, K,&Higo, YJ.(2015).Compressibilities of MnFe2O4 polymorphs.PHYSICS AND CHEMISTRY OF MINERALS,42(7),569—577.
MLA	Ye, LJ,et al."Compressibilities of MnFe2O4 polymorphs".PHYSICS AND CHEMISTRY OF MINERALS 42.7(2015):569—577.