Open AccessStructural analysis of FeTe alloy and its superconducting film preparation
Author(s) -
Zhang Lu-Shan,
Hui Yu,
Yanqun Guo
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.016101
Subject(s) - tetragonal crystal system , materials science , alloy , superconductivity , lattice constant , rietveld refinement , diffraction , lattice (music) , superconducting transition temperature , crystallography , crystal structure , condensed matter physics , metallurgy , optics , chemistry , physics , acoustics
The vacuum sintered alloy with nominal composition of FeTe was analyzed using powder X-ray diffraction and refined with Rietveld method. It is shown that FeTe alloy crystallizes a tetragonal structure with space group of P/4nmm and its lattice constant is a = 3.8214(3)Å, c = 6.2875(3) Å, Z = 2. Fe at 2a and 2c positions and Te at 2c positions. FeTe films prepared by pulsed laser deposition showed superconducting transition with starting transition temperature Tc,onset of 13.2 K and Tc,0 of 9.8 K.