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Title: Superconductivity of magnetic Sm-substituted LaCo{sub 2}B{sub 2}

Abstract

In this work, superconductivity with a maximum superconducting transition onset temperature T{sub C} of 3.6 K is reported in La{sub 1-x}Sm{sub x}Co{sub 2}B{sub 2} in the concentration range 0.12 ≤ x ≤ 0.20. Substitution of magnetic Sm ions with 4f electrons for La is beneficial for superconductivity in the system. The low upper critical field of La{sub 0.8}Sm{sub 0.2}Co{sub 2}B{sub 2} suggests that the dominant magnetic-field suppressing superconducting mechanism is the orbit pair-breaking effect. A special specific-heat anomaly is observed around T{sub C}.

Authors:
; ; ; ; ;  [1]
  1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 (China)
Publication Date:
OSTI Identifier:
22410131
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COBALT BORIDES; CONCENTRATION RATIO; CRITICAL FIELD; ELECTRONS; LANTHANUM COMPOUNDS; ORBITS; SAMARIUM COMPOUNDS; SAMARIUM IONS; SPECIFIC HEAT; SUPERCONDUCTIVITY; SUPERCONDUCTORS

Citation Formats

Wang, Y., Ren, W. J., E-mail: wjren@imr.ac.cn, Duan, T. F., Li, D., Li, J., and Zhang, Z. D. Superconductivity of magnetic Sm-substituted LaCo{sub 2}B{sub 2}. United States: N. p., 2015. Web. doi:10.1063/1.4914541.
Wang, Y., Ren, W. J., E-mail: wjren@imr.ac.cn, Duan, T. F., Li, D., Li, J., & Zhang, Z. D. Superconductivity of magnetic Sm-substituted LaCo{sub 2}B{sub 2}. United States. doi:10.1063/1.4914541.
Wang, Y., Ren, W. J., E-mail: wjren@imr.ac.cn, Duan, T. F., Li, D., Li, J., and Zhang, Z. D. Thu . "Superconductivity of magnetic Sm-substituted LaCo{sub 2}B{sub 2}". United States. doi:10.1063/1.4914541.
@article{osti_22410131,
title = {Superconductivity of magnetic Sm-substituted LaCo{sub 2}B{sub 2}},
author = {Wang, Y. and Ren, W. J., E-mail: wjren@imr.ac.cn and Duan, T. F. and Li, D. and Li, J. and Zhang, Z. D.},
abstractNote = {In this work, superconductivity with a maximum superconducting transition onset temperature T{sub C} of 3.6 K is reported in La{sub 1-x}Sm{sub x}Co{sub 2}B{sub 2} in the concentration range 0.12 ≤ x ≤ 0.20. Substitution of magnetic Sm ions with 4f electrons for La is beneficial for superconductivity in the system. The low upper critical field of La{sub 0.8}Sm{sub 0.2}Co{sub 2}B{sub 2} suggests that the dominant magnetic-field suppressing superconducting mechanism is the orbit pair-breaking effect. A special specific-heat anomaly is observed around T{sub C}.},
doi = {10.1063/1.4914541},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}