Superconductivity in 122 antimonide SrPt2Sb2

Motoharu Imai; Satoshi Emura; Mitsuaki Nishio; Yoshitaka Matsushita; Soshi Ibuka; Naoya Eguchi; Fumihiro Ishikawa; Yuh Yamada; Takahiro Muranaka; Jun Akimitsu

doi:10.1088/0953-2048/26/7/075001

Superconductivity in 122 antimonide SrPt₂Sb₂

Motoharu Imai, Satoshi Emura, Mitsuaki Nishio, Yoshitaka Matsushita, Soshi Ibuka, Naoya Eguchi, Fumihiro Ishikawa, Yuh Yamada, Takahiro Muranaka, Jun Akimitsu

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

18 Citations (Scopus)

Abstract

Measurements of electrical resistivity ρ, magnetization M and specific heat C have revealed that SrPt2Sb2 is a type-II superconducting material with a superconducting critical temperature (Tc) of 2.1 K. The electronic specific heat coefficient γ and the ratio ΔC(Tc)/γTc are 9.2(1) mJ mol ^-1 K^-2 and 1.29, respectively. The temperature dependence of ρ exhibits anomalies around 270 K. Synchrotron x-ray diffraction patterns at 295 and 134 K clearly indicate that SrPt2Sb2 undergoes a structural phase transition in the temperature range from 134 to 295 K, suggesting that the anomalies observed in ρ around 270 K are related to a structural phase transition.

Original language	English
Article number	075001
Journal	Superconductor Science and Technology
Volume	26
Issue number	7
DOIs	https://doi.org/10.1088/0953-2048/26/7/075001
Publication status	Published - Jul 2013
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Condensed Matter Physics
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1088/0953-2048/26/7/075001

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abstract = "Measurements of electrical resistivity ρ, magnetization M and specific heat C have revealed that SrPt2Sb2 is a type-II superconducting material with a superconducting critical temperature (Tc) of 2.1 K. The electronic specific heat coefficient γ and the ratio ΔC(Tc)/γTc are 9.2(1) mJ mol -1 K-2 and 1.29, respectively. The temperature dependence of ρ exhibits anomalies around 270 K. Synchrotron x-ray diffraction patterns at 295 and 134 K clearly indicate that SrPt2Sb2 undergoes a structural phase transition in the temperature range from 134 to 295 K, suggesting that the anomalies observed in ρ around 270 K are related to a structural phase transition.",

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T1 - Superconductivity in 122 antimonide SrPt2Sb2

AU - Imai, Motoharu

AU - Emura, Satoshi

AU - Nishio, Mitsuaki

AU - Matsushita, Yoshitaka

AU - Ibuka, Soshi

AU - Eguchi, Naoya

AU - Ishikawa, Fumihiro

AU - Yamada, Yuh

AU - Muranaka, Takahiro

AU - Akimitsu, Jun

PY - 2013/7

Y1 - 2013/7

N2 - Measurements of electrical resistivity ρ, magnetization M and specific heat C have revealed that SrPt2Sb2 is a type-II superconducting material with a superconducting critical temperature (Tc) of 2.1 K. The electronic specific heat coefficient γ and the ratio ΔC(Tc)/γTc are 9.2(1) mJ mol -1 K-2 and 1.29, respectively. The temperature dependence of ρ exhibits anomalies around 270 K. Synchrotron x-ray diffraction patterns at 295 and 134 K clearly indicate that SrPt2Sb2 undergoes a structural phase transition in the temperature range from 134 to 295 K, suggesting that the anomalies observed in ρ around 270 K are related to a structural phase transition.

AB - Measurements of electrical resistivity ρ, magnetization M and specific heat C have revealed that SrPt2Sb2 is a type-II superconducting material with a superconducting critical temperature (Tc) of 2.1 K. The electronic specific heat coefficient γ and the ratio ΔC(Tc)/γTc are 9.2(1) mJ mol -1 K-2 and 1.29, respectively. The temperature dependence of ρ exhibits anomalies around 270 K. Synchrotron x-ray diffraction patterns at 295 and 134 K clearly indicate that SrPt2Sb2 undergoes a structural phase transition in the temperature range from 134 to 295 K, suggesting that the anomalies observed in ρ around 270 K are related to a structural phase transition.

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Superconductivity in 122 antimonide SrPt₂Sb₂

Abstract

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