Preparation and characterisation of Ru doped MgB2

被引：12

作者：

Grivel, J. -C. ^{[1
]}

Holte, O. J. ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Energy Convers & Storage, DK-4000 Roskilde, Denmark

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2013年 / 495卷

关键词：

MgB2; Doping; Ruthenium; CRITICAL-CURRENT DENSITY; SUPERCONDUCTING PROPERTIES; STARTING COMPOSITION; SUBSTITUTION; TEMPERATURE; TRANSITION; PROPERTY; ZN; ZR; CO;

D O I：

10.1016/j.physc.2013.10.005

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Samples with Mg1-xRuxB2 nominal stoichiometry were prepared by sintering at 800 degrees C. The critical transition temperature decreases up to a substitution level of x approximate to 0.015. A maximum solubility limit slightly in excess of 1 at.% Ru for Mg is confirmed by energy dispersive spectroscopy measurements. From and beyond this limit, an unidentified phase appears in the X-ray diffraction patterns. Interestingly, the lattice parameters of the MgB2 phase are constant up to x = 0.015, but start to decrease for higher Ru contents. This feature could be related to the fact that a Mg-Ru impurity phase results in a Mg-deficient (Mg, Ru) B-2 matrix. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：229 / 232

页数：4

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