High pressure in-situ X-ray diffraction study on Zn-doped magnetite nanoparticles

被引：2
|
作者：
Ferrari, S. [1 ]
Bilovol, V. [1 ]
Pampillo, L. G. [1 ]
Grinblat, F. [1 ]
Errandonea, D. [2 ]
机构：
[1] Univ Buenos Aires, Consejo Nacl lnvest Cient & Tecn, Inst Tecnol & Ciencias Ingn Ingn Hilario Fernande, Av Paseo Colon 850,C1063ACV, Buenos Aires, DF, Argentina
[2] Univ Valencia ICMUV, Inst Univ Ciencia Mat, Dept Fis Aplicada, Valencia 46100, Spain
来源：
SOLID STATE SCIENCES | 2018年 / 77卷
关键词：
NANOCRYSTALS; BEHAVIOR; SPINEL;
D O I：
10.1016/j.solidstatesciences.2018.01.002
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
We have performed high pressure synchrotron X-ray powder diffraction experiments on two different samples of Zn-doped magnetite nanoparticles (formula Fe(3-x)ZnxO4; x = 0.2, 0.5). The structural behavior of then a noparticles was studied up to 13.5 GPa for x = 0.2, and up to 17.4 GPa for x = 0.5. We have found that both systems remain in the cubic spinel structure as expected for this range of applied pressures. The analysis of the unit cell volume vs. pressure results in bulk modulus values lower than in both endmembers, magnetite (Fe3O4) and zinc ferrite (ZnFe2O4), suggesting that chemical disorder may favor compressibility, which is expected to improve the increase of the Neel temperature under compression. (c) 2018 Elsevier Masson SAS. All rights reserved.
引用
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页码：1 / 4
页数：4
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