TY - JOUR
T1 - Structural study on novel two-dimensional superconductor NaxHfNCl
AU - Shamoto, S.
AU - Iizawa, K.
AU - Yamada, M.
AU - Ohoyama, K.
AU - Yamaguchi, Y.
AU - Kajitani, T.
N1 - Funding Information:
The authors wish to express their special thanks to Professor S. Yamanaka for his kind advice in the preparation of samples, Professor Y. Syono for providing us with the opportunity of using the SQUID magnetometer, Mr S. Kawano and Mr K. Nemoto for their kind technical assistance. The present work is partially supported by the REIMEI Research Resources of Japan Atomic Energy Research Institute.
PY - 1999
Y1 - 1999
N2 - The structure of the novel two-dimensional superconductor, NaxHfNCl (x = 0.29, Tc = 20 K) is determined by powder neutron diffraction measurement. NaxHfNCl is isomorphous to Li0.16ZrNCl, which also exhibits superconductivity with Tc = 15 K. The nearest interatomic distance of Hf-Hf (3.24 angstrom at 4 K) is longer than that of Zr-Zr (3.10 angstrom at 4 K) in Li0.16ZrNCl. This structural change corresponds to the decrease in the transfer integral of the d bands in the Hf system, i.e. tHf/tZr approx. 0.85, indicating the enhancement of the density of states in NaxHfNCl.
AB - The structure of the novel two-dimensional superconductor, NaxHfNCl (x = 0.29, Tc = 20 K) is determined by powder neutron diffraction measurement. NaxHfNCl is isomorphous to Li0.16ZrNCl, which also exhibits superconductivity with Tc = 15 K. The nearest interatomic distance of Hf-Hf (3.24 angstrom at 4 K) is longer than that of Zr-Zr (3.10 angstrom at 4 K) in Li0.16ZrNCl. This structural change corresponds to the decrease in the transfer integral of the d bands in the Hf system, i.e. tHf/tZr approx. 0.85, indicating the enhancement of the density of states in NaxHfNCl.
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U2 - 10.1016/S0022-3697(99)00155-9
DO - 10.1016/S0022-3697(99)00155-9
M3 - Conference article
AN - SCOPUS:0032590535
SN - 0022-3697
VL - 60
SP - 1431
EP - 1433
JO - Journal of Physics and Chemistry of Solids
JF - Journal of Physics and Chemistry of Solids
IS - 8
T2 - Proceedings of the 1998 7th ISSP International Symposium Frontiers in Neutron Scattering Research (ISSP7)
Y2 - 24 November 1998 through 27 November 1998
ER -