Structural study on novel two-dimensional superconductor NaxHfNCl

S. Shamoto; K. Iizawa; M. Yamada; K. Ohoyama; Y. Yamaguchi; T. Kajitani

doi:10.1016/S0022-3697(99)00155-9

Structural study on novel two-dimensional superconductor Na_xHfNCl

S. Shamoto
, K. Iizawa
, M. Yamada
, K. Ohoyama
, Y. Yamaguchi
, T. Kajitani

Department of Physics

Research output: Contribution to journal › Conference article › peer-review

37 Citations (Scopus)

Abstract

The structure of the novel two-dimensional superconductor, Na_xHfNCl (x = 0.29, T_c = 20 K) is determined by powder neutron diffraction measurement. Na_xHfNCl is isomorphous to Li_0.16ZrNCl, which also exhibits superconductivity with T_c = 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 Li_0.16ZrNCl. This structural change corresponds to the decrease in the transfer integral of the d bands in the Hf system, i.e. t_Hf/t_Zr approx. 0.85, indicating the enhancement of the density of states in Na_xHfNCl.

Original language	English
Pages (from-to)	1431-1433
Number of pages	3
Journal	Journal of Physics and Chemistry of Solids
Volume	60
Issue number	8
DOIs	https://doi.org/10.1016/S0022-3697(99)00155-9
Publication status	Published - 1999
Event	Proceedings of the 1998 7th ISSP International Symposium Frontiers in Neutron Scattering Research (ISSP7) - Tokyo, Jpn Duration: 1998 Nov 24 → 1998 Nov 27

All Science Journal Classification (ASJC) codes

General Chemistry
General Materials Science
Condensed Matter Physics

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10.1016/S0022-3697(99)00155-9

Cite this

@article{79d05be7459b4fd1905d246f8eb22050,

title = "Structural study on novel two-dimensional superconductor NaxHfNCl",

abstract = "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.",

author = "S. Shamoto and K. Iizawa and M. Yamada and K. Ohoyama and Y. Yamaguchi and T. Kajitani",

note = "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. ; Proceedings of the 1998 7th ISSP International Symposium Frontiers in Neutron Scattering Research (ISSP7) ; Conference date: 24-11-1998 Through 27-11-1998",

year = "1999",

doi = "10.1016/S0022-3697(99)00155-9",

language = "English",

volume = "60",

pages = "1431--1433",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

publisher = "Elsevier Limited",

number = "8",

}

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.

UR - https://www.scopus.com/pages/publications/0032590535

UR - https://www.scopus.com/pages/publications/0032590535#tab=citedBy

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 -

Structural study on novel two-dimensional superconductor Na_xHfNCl

Abstract

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