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Title: Heat Capacity and Mössbauer Study of Self-Flux Grown FeTe Single Crystal

Abstract

We report mainly the heat capacity and Mössbauer study of self-flux grown FeTe single crystal, which is a ground state compound of the Fe chalcogenides superconducting series i.e. FeTe{sub 1−x}(Se/S){sub x} The as grown FeTe single crystal is large enough to the tune of a few centimetres and the same crystallizes in tetragonal structure having space group of P4/nmm. FeTe shows the structural/magnetic phase transition at 70 K in both magnetic and resistivity measurements. Heat capacity measurement also confirms the coupled structural/magnetic transition at the same temperature. The Debye model fitting of low temperature (below 70 K) heat capacity exhibited Debye temperature (𝜃{sub D}) to be 324 K. Mössbauer spectra are performed at 300 and 5 K. The 300-K spectra showed two paramagnetic doublets and the 5-K spectra exhibited hyperfine magnetic sextet with an average hyperfine field of 10.6 Tesla matching with the results of Yoshikazu Mizuguchi et al.

Authors:
 [1];  [2];  [1]
  1. CSIR-National Physical Laboratory (India)
  2. UGC-DAE Consortium for Scientific Research (India)
Publication Date:
OSTI Identifier:
22771150
Resource Type:
Journal Article
Journal Name:
Journal of Superconductivity and Novel Magnetism
Additional Journal Information:
Journal Volume: 31; Journal Issue: 6; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1557-1939
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTAL GROWTH; DEBYE TEMPERATURE; GROUND STATES; IRON TELLURIDES; MOESSBAUER SPECTROMETERS; MONOCRYSTALS; PARAMAGNETISM; PHASE TRANSFORMATIONS; SPACE GROUPS; SPECIFIC HEAT; SUPERCONDUCTORS; TEMPERATURE RANGE 0065-0273 K

Citation Formats

Maheshwari, P. K., Reddy, V. Raghavendra, and Awana, V. P. S.,. Heat Capacity and Mössbauer Study of Self-Flux Grown FeTe Single Crystal. United States: N. p., 2018. Web. doi:10.1007/S10948-018-4649-0.
Maheshwari, P. K., Reddy, V. Raghavendra, & Awana, V. P. S.,. Heat Capacity and Mössbauer Study of Self-Flux Grown FeTe Single Crystal. United States. doi:10.1007/S10948-018-4649-0.
Maheshwari, P. K., Reddy, V. Raghavendra, and Awana, V. P. S.,. Fri . "Heat Capacity and Mössbauer Study of Self-Flux Grown FeTe Single Crystal". United States. doi:10.1007/S10948-018-4649-0.
@article{osti_22771150,
title = {Heat Capacity and Mössbauer Study of Self-Flux Grown FeTe Single Crystal},
author = {Maheshwari, P. K. and Reddy, V. Raghavendra and Awana, V. P. S.,},
abstractNote = {We report mainly the heat capacity and Mössbauer study of self-flux grown FeTe single crystal, which is a ground state compound of the Fe chalcogenides superconducting series i.e. FeTe{sub 1−x}(Se/S){sub x} The as grown FeTe single crystal is large enough to the tune of a few centimetres and the same crystallizes in tetragonal structure having space group of P4/nmm. FeTe shows the structural/magnetic phase transition at 70 K in both magnetic and resistivity measurements. Heat capacity measurement also confirms the coupled structural/magnetic transition at the same temperature. The Debye model fitting of low temperature (below 70 K) heat capacity exhibited Debye temperature (𝜃{sub D}) to be 324 K. Mössbauer spectra are performed at 300 and 5 K. The 300-K spectra showed two paramagnetic doublets and the 5-K spectra exhibited hyperfine magnetic sextet with an average hyperfine field of 10.6 Tesla matching with the results of Yoshikazu Mizuguchi et al.},
doi = {10.1007/S10948-018-4649-0},
journal = {Journal of Superconductivity and Novel Magnetism},
issn = {1557-1939},
number = 6,
volume = 31,
place = {United States},
year = {2018},
month = {6}
}