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, Jun Akimitsu

Research output: Contribution to journalArticle

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 languageEnglish
JournalPhysica C: Superconductivity and its Applications
Volume470
Issue numberSUPPL.1
DOIs
Publication statusPublished - Dec 2010
Externally publishedYes

Fingerprint

Silver oxides
silver oxides
Copper oxides
clathrates
copper oxides
Specific heat
Anions
Cations
Negative ions
Thermodynamic properties
thermodynamic properties
Positive ions
specific heat
Metallic compounds
anions
Thermal variables measurement
cations
Superconductivity
Magnetic susceptibility
heat measurement

Keywords

  • Ag0MX
  • Copper-oxide
  • Cu 0MX
  • Silver-oxide

ASJC Scopus subject areas

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

Cite this

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, Jun.

In: Physica C: Superconductivity and its Applications, Vol. 470, No. SUPPL.1, 12.2010.

Research output: Contribution to journalArticle

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T2 - Ag6 O8MX and Cu6O8MX (M = cation, X = anion)

AU - Kawashima, K.

AU - Tozawa, H.

AU - Maruyama, M.

AU - Ichinokawa, R.

AU - Sugiyama, T.

AU - Akimitsu, Jun

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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 - Cu 0MX

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