Thermodynamic properties in the clathrate-type silver- and copper-oxide: Ag6 O8MX and Cu6O8MX (M = cation, X = anion)

K. Kawashima; H. Tozawa; M. Maruyama; R. Ichinokawa; T. Sugiyama; J. Akimitsu

doi:10.1016/j.physc.2009.10.127

Thermodynamic properties in the clathrate-type silver- and copper-oxide: Ag₆ O₈MX and Cu₆O₈MX (M = cation, X = anion)

K. Kawashima, H. Tozawa, M. Maruyama, R. Ichinokawa, T. Sugiyama, J. Akimitsu

Research output: Contribution to journal › Article › peer-review

Abstract

We present the thermodynamic properties in the clathrate-type silver- and copper-oxides Ag₆O₈MX and Cu₆O₈MX (M = cation, X = anion) compounds, having Ag₆O₈ (or Cu ₆O₈)-cage in their crystal structure. Ag₆O ₈MX and Cu₆O₈MX are crystallized in a cubic structure with a space group of Fm3̄m. We synthesized high quality samples of Ag₆O₈MX and Cu₆O₈MX and examined the electrical resistivity, magnetic susceptibility, and specific heat measurements. The superconductivity in Ag₆O₈AgX (X = NO3- and HF2- have an isotropic gap symmetry by means of the specific heat data. In Cu₆O₈MCl, the ground sata of Cu₆O ₈MCl compounds changed metallic to semiconducting by changing the valence state of M site ion.

Original language	English
Pages (from-to)	S26-S28
Journal	Physica C: Superconductivity and its applications
Volume	470
Issue number	SUPPL.1
DOIs	https://doi.org/10.1016/j.physc.2009.10.127
Publication status	Published - Dec 2010
Externally published	Yes

Keywords

Ag0MX
Copper-oxide
Cu 0MX
Silver-oxide

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

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Thermodynamic properties in the clathrate-type silver- and copper-oxide : Ag₆ O₈MX and Cu₆O₈MX (M = cation, X = anion). / Kawashima, K.; Tozawa, H.; Maruyama, M.; Ichinokawa, R.; Sugiyama, T.; Akimitsu, J.

In: Physica C: Superconductivity and its applications, Vol. 470, No. SUPPL.1, 12.2010, p. S26-S28.

Research output: Contribution to journal › Article › peer-review

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title = "Thermodynamic properties in the clathrate-type silver- and copper-oxide: Ag6 O8MX and Cu6O8MX (M = cation, X = anion)",

abstract = "We present the thermodynamic properties in the clathrate-type silver- and copper-oxides Ag6O8MX and Cu6O8MX (M = cation, X = anion) compounds, having Ag6O8 (or Cu 6O8)-cage in their crystal structure. Ag6O 8MX and Cu6O8MX are crystallized in a cubic structure with a space group of Fm{\=3}m. We synthesized high quality samples of Ag6O8MX and Cu6O8MX and examined the electrical resistivity, magnetic susceptibility, and specific heat measurements. The superconductivity in Ag6O8AgX (X = NO3- and HF2- have an isotropic gap symmetry by means of the specific heat data. In Cu6O8MCl, the ground sata of Cu6O 8MCl compounds changed metallic to semiconducting by changing the valence state of M site ion.",

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author = "K. Kawashima and H. Tozawa and M. Maruyama and R. Ichinokawa and T. Sugiyama and J. Akimitsu",

note = "Funding Information: This work was partially supported by a Grant-in-Aid for Science Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan.",

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AU - Kawashima, K.

AU - Tozawa, H.

AU - Maruyama, M.

AU - Ichinokawa, R.

AU - Sugiyama, T.

AU - Akimitsu, J.

N1 - Funding Information: This work was partially supported by a Grant-in-Aid for Science Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

PY - 2010/12

Y1 - 2010/12

N2 - We present the thermodynamic properties in the clathrate-type silver- and copper-oxides Ag6O8MX and Cu6O8MX (M = cation, X = anion) compounds, having Ag6O8 (or Cu 6O8)-cage in their crystal structure. Ag6O 8MX and Cu6O8MX are crystallized in a cubic structure with a space group of Fm3̄m. We synthesized high quality samples of Ag6O8MX and Cu6O8MX and examined the electrical resistivity, magnetic susceptibility, and specific heat measurements. The superconductivity in Ag6O8AgX (X = NO3- and HF2- have an isotropic gap symmetry by means of the specific heat data. In Cu6O8MCl, the ground sata of Cu6O 8MCl compounds changed metallic to semiconducting by changing the valence state of M site ion.

AB - We present the thermodynamic properties in the clathrate-type silver- and copper-oxides Ag6O8MX and Cu6O8MX (M = cation, X = anion) compounds, having Ag6O8 (or Cu 6O8)-cage in their crystal structure. Ag6O 8MX and Cu6O8MX are crystallized in a cubic structure with a space group of Fm3̄m. We synthesized high quality samples of Ag6O8MX and Cu6O8MX and examined the electrical resistivity, magnetic susceptibility, and specific heat measurements. The superconductivity in Ag6O8AgX (X = NO3- and HF2- have an isotropic gap symmetry by means of the specific heat data. In Cu6O8MCl, the ground sata of Cu6O 8MCl compounds changed metallic to semiconducting by changing the valence state of M site ion.

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KW - Silver-oxide

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