CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Pressure-induced structural evaluation and insulator-metal transition in the mixed spinel ferrite Zn0.2Mg0.8Fe2O4
Rahman, S; Samanta, S; Errandonea, D; Yan, S; Yang, K; Lu, JL; Wang, L
2017
Source PublicationPHYSICAL REVIEW B
ISSN2469-9950
Volume95Issue:2Pages:-
Subtype期刊论文
AbstractThe effect of pressure on the electronic properties and crystal structure in amixed spinel ferrite Zn0.2Mg0.8Fe2O4 was studied for the first time up to 48 GPa at room temperature using x-ray diffraction, Raman spectroscopy, and electrical transport measurements. The sample was cubic (spinel-type Fd (3) over bar 3m) at ambient pressure and underwent a pressure-induced structural transition to an orthorhombic phase (CaTi2O4-type Bbmm) at 21GPa. This structural transformation corresponded to a first-order phase transition that involved 7.5% molar volume shrinkage. The onset of the Mott insulator-metal transition (IMT) around 20 GPa was due to a spin crossover mechanism that led to the Fe3+ magnetic moment collapse. All the Raman modes disappeared at high pressures, which supported metallization. Analysis of structural and electrical transport measurements showed a simultaneous volume collapse and sharp IMT within a narrow pressure range. The orthorhombic high-pressure phase was found to have a higher conductivity than the cubic phase. The pressure dependence of the conductivity supported the metallic behavior of the high-pressure phase.
DOI10.1103/PhysRevB.95.024107
Indexed BySCI
Language英语
WOS IDWOS:000391851100001
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/27418
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
Rahman, S,Samanta, S,Errandonea, D,et al. Pressure-induced structural evaluation and insulator-metal transition in the mixed spinel ferrite Zn0.2Mg0.8Fe2O4[J]. PHYSICAL REVIEW B,2017,95(2):-.
APA Rahman, S.,Samanta, S.,Errandonea, D.,Yan, S.,Yang, K.,...&Wang, L.(2017).Pressure-induced structural evaluation and insulator-metal transition in the mixed spinel ferrite Zn0.2Mg0.8Fe2O4.PHYSICAL REVIEW B,95(2),-.
MLA Rahman, S,et al."Pressure-induced structural evaluation and insulator-metal transition in the mixed spinel ferrite Zn0.2Mg0.8Fe2O4".PHYSICAL REVIEW B 95.2(2017):-.
Files in This Item: Download All
File Name/Size DocType Version Access License
Pressure-induced str(3638KB)期刊论文作者接受稿开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Rahman, S]'s Articles
[Samanta, S]'s Articles
[Errandonea, D]'s Articles
Baidu academic
Similar articles in Baidu academic
[Rahman, S]'s Articles
[Samanta, S]'s Articles
[Errandonea, D]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Rahman, S]'s Articles
[Samanta, S]'s Articles
[Errandonea, D]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Pressure-induced structural evaluation and insulator-metal transition in the mixed spinel ferrite Zn0.2Mg0.8Fe2O4.pdf
Format: Adobe PDF
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.