Chemical pressure effect on the superconductor MgCNi3

Masatomo Uehara; Tsuyoshi Amano; Sachiko Takano; Tatsuya Kôri; Takahiro Yamazaki; Yoshihide Kimishima

doi:10.1016/j.physc.2006.03.017

Chemical pressure effect on the superconductor MgCNi₃

Masatomo Uehara, Tsuyoshi Amano, Sachiko Takano, Tatsuya Kôri, Takahiro Yamazaki, Yoshihide Kimishima

総合研究院

研究成果: Article › 査読

37 被引用数 (Scopus)

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In order to investigate the positive and negative pressure effects on superconducting properties for MgCNi₃, chemical pressure was applied by means of Zn-doping to Mg site (Mg_1-xZn_xCNi₃) and by substituting Mg with Cd (CdCNi₃). The lattice constant decreases (increases) with increasing Zn (Cd) content. In the magnetic measurements, superconducting transition temperature (T_c) is decreasing with increasing Zn content and disappears at x > 0.3. While for CdCNi₃, T_c also decreases down to 3.4 K. The result seems not to be fully understandable in the case of CdCNi₃ since T_c seems to rise owing to the increase of density of states at Fermi energy caused by lattice expansion.

本文言語	English
ページ（範囲）	6-9
ページ数	4
ジャーナル	Physica C: Superconductivity and its applications
巻	440
号	1-2
DOI	https://doi.org/10.1016/j.physc.2006.03.017
出版ステータス	Published - 1 7月 2006

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title = "Chemical pressure effect on the superconductor MgCNi3",

abstract = "In order to investigate the positive and negative pressure effects on superconducting properties for MgCNi3, chemical pressure was applied by means of Zn-doping to Mg site (Mg1-xZnxCNi3) and by substituting Mg with Cd (CdCNi3). The lattice constant decreases (increases) with increasing Zn (Cd) content. In the magnetic measurements, superconducting transition temperature (Tc) is decreasing with increasing Zn content and disappears at x > 0.3. While for CdCNi3, Tc also decreases down to 3.4 K. The result seems not to be fully understandable in the case of CdCNi3 since Tc seems to rise owing to the increase of density of states at Fermi energy caused by lattice expansion.",

keywords = "CdCNi, Doping effect, Ferromagnetism, MgZnCNi, Superconductivity",

author = "Masatomo Uehara and Tsuyoshi Amano and Sachiko Takano and Tatsuya K{\^o}ri and Takahiro Yamazaki and Yoshihide Kimishima",

note = "Funding Information: This work was partly supported by a Grant-in-Aid for Scientific Research from The Ministry of Education, Culture, Sports, Science and Technology, Japan and by Research Institute of Yokohama National University.",

year = "2006",

month = jul,

day = "1",

doi = "10.1016/j.physc.2006.03.017",

language = "English",

volume = "440",

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journal = "Physica C: Superconductivity and its applications",

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TY - JOUR

T1 - Chemical pressure effect on the superconductor MgCNi3

AU - Uehara, Masatomo

AU - Amano, Tsuyoshi

AU - Takano, Sachiko

AU - Kôri, Tatsuya

AU - Yamazaki, Takahiro

AU - Kimishima, Yoshihide

N1 - Funding Information: This work was partly supported by a Grant-in-Aid for Scientific Research from The Ministry of Education, Culture, Sports, Science and Technology, Japan and by Research Institute of Yokohama National University.

PY - 2006/7/1

Y1 - 2006/7/1

N2 - In order to investigate the positive and negative pressure effects on superconducting properties for MgCNi3, chemical pressure was applied by means of Zn-doping to Mg site (Mg1-xZnxCNi3) and by substituting Mg with Cd (CdCNi3). The lattice constant decreases (increases) with increasing Zn (Cd) content. In the magnetic measurements, superconducting transition temperature (Tc) is decreasing with increasing Zn content and disappears at x > 0.3. While for CdCNi3, Tc also decreases down to 3.4 K. The result seems not to be fully understandable in the case of CdCNi3 since Tc seems to rise owing to the increase of density of states at Fermi energy caused by lattice expansion.

AB - In order to investigate the positive and negative pressure effects on superconducting properties for MgCNi3, chemical pressure was applied by means of Zn-doping to Mg site (Mg1-xZnxCNi3) and by substituting Mg with Cd (CdCNi3). The lattice constant decreases (increases) with increasing Zn (Cd) content. In the magnetic measurements, superconducting transition temperature (Tc) is decreasing with increasing Zn content and disappears at x > 0.3. While for CdCNi3, Tc also decreases down to 3.4 K. The result seems not to be fully understandable in the case of CdCNi3 since Tc seems to rise owing to the increase of density of states at Fermi energy caused by lattice expansion.

KW - CdCNi

KW - Doping effect

KW - Ferromagnetism

KW - MgZnCNi

KW - Superconductivity

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U2 - 10.1016/j.physc.2006.03.017

DO - 10.1016/j.physc.2006.03.017

M3 - Article

AN - SCOPUS:33646845794

SN - 0921-4534

VL - 440

SP - 6

EP - 9

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - 1-2

ER -

Chemical pressure effect on the superconductor MgCNi3

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Chemical pressure effect on the superconductor MgCNi₃