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

Journal Article · Thu May 07 00:00:00 EDT 2015 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4914541· OSTI ID:22410131

Wang, Y.; Duan, T. F.; Li, D.; Li, J.; Zhang, Z. D. ^[1]

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1. Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 (China)

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}.

• OSTI ID: 22410131
• Journal Information: Journal of Applied Physics, Vol. 117, Issue 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

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