TY - JOUR
T1 - Superconductivity in Y2C3 with medium Tc
AU - Akutagawa, Satoshi
AU - Akimitsu, Jun
N1 - Funding Information:
This work was partly supported by the 21st COE program, ‘High-Tech Research Center’ Project for Private Universities: matching fund subsidy from MEXT (Ministry of Education, Culture, Sports, Science and Technology; 2002–2004), and a Grant-in-Aid for Scientific Research on Priority Area from the Ministry of Education, Culture, Sports, Science and Technology of Japan.
PY - 2006/1
Y1 - 2006/1
N2 - Recently, we have reported a relatively high-Tc superconductivity in Y2C3 at 18 K whose Tc could be changed by synthesis conditions from 10 to 18 K [G. Amano, S. Akutagawa, T. Muranaka, Y. Zenitani, J. Akimitsu, Superconductivity at 18 K in yttrium sesquicarbide system, Y2C3 J. Phys. Soc. Jpn. 73 (2004) 530.]. We synthesized a high-purity sample of the medium-Tc phase in Y2C3 and examined its physical properties in detail. From a specific heat measurement, ΔC(Tc)/γT c value is calculated to be 6.50 and the superconducting gap is estimated to be 2Δ/kB Tc=5.40, indicating that the superconductivity in Y2C3 can be described by an s-wave strong coupling regime.
AB - Recently, we have reported a relatively high-Tc superconductivity in Y2C3 at 18 K whose Tc could be changed by synthesis conditions from 10 to 18 K [G. Amano, S. Akutagawa, T. Muranaka, Y. Zenitani, J. Akimitsu, Superconductivity at 18 K in yttrium sesquicarbide system, Y2C3 J. Phys. Soc. Jpn. 73 (2004) 530.]. We synthesized a high-purity sample of the medium-Tc phase in Y2C3 and examined its physical properties in detail. From a specific heat measurement, ΔC(Tc)/γT c value is calculated to be 6.50 and the superconducting gap is estimated to be 2Δ/kB Tc=5.40, indicating that the superconductivity in Y2C3 can be described by an s-wave strong coupling regime.
KW - Carbide
KW - Magnetic susceptibility
KW - Specific heat
KW - Superconductivity
KW - YC
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U2 - 10.1016/j.stam.2005.11.011
DO - 10.1016/j.stam.2005.11.011
M3 - Article
AN - SCOPUS:33344468374
VL - 7
SP - 2
EP - 5
JO - Science and Technology of Advanced Materials
JF - Science and Technology of Advanced Materials
SN - 1468-6996
IS - 1 SPEC. ISS.
ER -