Mechanical properties of the iron-based superconductor SmFeAsO1-xFx

Frontiers in Theoretical and Applied Physics/UAE 2017

Malaeb, W.^1 ; Kazah, I.^1 ; Awad, R.^1 ; Fujioka, M.^2

Physics Department, Faculty of Science, Beirut Arab University, Beirut

11-5020, Lebanon^1

Research Institute for Electronic Science, Hokkaido University, Hokkaido, Sapporo, 001-0020, Japan^2

关键词: Best match;    Doping range;    Fluorine doping;    Meyer's law;    Proportional specimen resistance model;    Psr models;    Vickers microhardness;    Vickers microhardness tests;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/869/1/012042/pdf
DOI  :  10.1088/1742-6596/869/1/012042

来源: IOP

【 摘 要 】

We have investigated the mechanical properties of the iron-based superconductor (FeSC) SmFeAsO1-xFx(Sm1111) with a wide doping range 0.09 ≤ x ≤ 0.3 by performing the Vickers microhardness test. The estimated Vickers microhardness number (Hv) was analysed using Meyer's law, Hays-Kendall approach, elastic/plastic deformation (EPD) model and proportional specimen resistance (PSR) model, where the PSR model showed the best match with our experimental data. Hvvalues showed an increase as x increases, indicating that fluorine doping results in an improvement in the mechanical properties of the Sm1111 compound and makes it more convenient for applications.