Raman and X-ray diffraction studies of superconducting FeTe1-xSex compounds

被引：2
|
作者：
Lodhi, Pavitra Devi [1 ]
Awana, V. P. S. [2 ]
Kaurav, Netram [1 ]
机构：
[1] Govt Holkar Sci Coll, Dept Phys, AB Rd, Indore 452017, MP, India
[2] Natl Phys Lab, Superconduct & Cryogen Div, New Delhi 110012, India
来源：
FRONTIERS OF PHYSICS AND PLASMA SCIENCE | 2017年 / 836卷
关键词：
D O I：
10.1088/1742-6596/836/1/012046
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
Iron-based superconducting layered compounds have the second highest transition temperature after cuprate superconductors. Their discovery is a milestone in the history of high-temperature superconductivity and will have profound implications for high-temperature superconducting mechanism as well as industrial applications. We have measured X-ray diffraction and Raman spectra of poly-crystalline FeTe1-xSex samples with x = 0.0, 0.5 and 1 at room temperature. X-ray profile of FeTe and FeTe0.5Se0.5 confirmed the primitive tetragonal unit cell. FeSe is found to be in double phase with tetragonal phase (about 66.62%) and orthorhombic (33.38%). A(1g) and B-1g phonon modes were observed in Raman spectra. At room temperature, these lines are located at 95 and 130 cm(-1) for FeTe, 93 and 129 cm(-1) for FeTe (0.5) Se (0.5) and 93 and 129 cm(-1) for FeSe samples.
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页数：4
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