Superconductivity in a new iron pnictide oxide (Fe2As2)(Sr4(Mg, Ti)2O6)

被引：46

作者：

Sato, Shinya ^{[1
,2
]}

Ogino, Hiraku ^{[1
,2
]}

Kawaguchi, Naoto ^{[1
,2
]}

Katsura, Yukari ^{[3
]}

Kishio, Kohji ^{[1
,2
]}

Shimoyama, Jun-ichi ^{[1
,2
]}

Kotegawa, Hisashi ^{[2
,4
]}

Tou, Hideki ^{[2
,4
]}

机构：

[1] Univ Tokyo, Dept Appl Chem, Bunkyo Ku, Tokyo 1138656, Japan

[2] JST TRIP, Chiyoda Ku, Tokyo 1020075, Japan

[3] RIKEN, Magnet Mat Lab, Wako, Saitama 3510106, Japan

[4] Kobe Univ, Dept Phys, Kobe, Hyogo 6578501, Japan

来源：

SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 2010年 / 23卷 / 04期

关键词：

D O I：

10.1088/0953-2048/23/4/045001

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have discovered a new iron pnictide oxide superconductor (Fe2As2)(Sr-4(Mg, Ti)(2)O-6). This material is isostructural with (Fe2As2)(Sr4M2O6) (M = Sc, Cr, V), which were found in previous studies. The structure of this compound is tetragonal with a space group of P4/nmm and consists of the anti-fluorite type FeAs layer and perovskite-type block layer. The lattice constants are a = 3.935 angstrom and c = 15.952 angstrom for (Fe2As2)(Sr4MgTiO6). Bulk superconductivity with a T-c(onset) of similar to 26 K was observed for a partially Co-substituted sample. Moreover, Co-free and Ti-rich samples exhibited higher T(c(onset))s above 35 K, which were further enhanced by applying high pressures up to similar to 43 K.

引用

页数：5

共 18 条

[1] Possible high temperature superconductivity in a Ti-doped A-Sc-Fe-As-O (A = Ca, Sr) system [J].

Chen, G. F. ;

Xia, T-L ;

Yang, H. X. ;

Li, J. Q. ;

Zheng, P. ;

Luo, J. L. ;

Wang, N. L. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2009, 22 (07)

[2]

HAN F, 2009, ARXIV09101537 CONDMA

[3] Superconductivity in the PbO-type structure α-FeSe [J].

Hsu, Fong-Chi ;

Luo, Jiu-Yong ;

Yeh, Kuo-Wei ;

Chen, Ta-Kun ;

Huang, Tzu-Wen ;

Wu, Phillip M. ;

Lee, Yong-Chi ;

Huang, Yi-Lin ;

Chu, Yan-Yi ;

Yan, Der-Chung ;

Wu, Maw-Kuen .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2008, 105 (38) :14262-14264

[4] Iron-based layered superconductor La[O1-xFx]FeAs (x=0.05-0.12) with Tc=26 K [J].

Kamihara, Yoichi ;

Watanabe, Takumi ;

Hirano, Masahiro ;

Hosono, Hideo .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2008, 130 (11) :3296-+

[5] Nonmagnetic indenter-type high-pressure cell for magnetic measurements [J].

Kobayashi, T. C. ;

Hidaka, H. ;

Kotegawa, H. ;

Fujiwara, K. ;

Eremets, M. I. .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2007, 78 (02)

[6] Contrasting Pressure Effects in Sr2VFeAsO3 and Sr2ScFePO3 [J].

Kotegawa, Hisashi ;

Kawazoe, Takayuki ;

Tou, Hideki ;

Murata, Keizo ;

Ogino, Hiraku ;

Kishio, Kohji ;

Shimoyama, Jun-ichi .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2009, 78 (12)

[7] Crystal structure and microwave dielectric properties of La(Mg1/2Ti1/2)O3 ceramics [J].

Lee, DY ;

Yoon, SJ ;

Yeo, JH ;

Nahm, S ;

Paik, JH ;

Whang, KC ;

Ahn, BG .

JOURNAL OF MATERIALS SCIENCE LETTERS, 2000, 19 (02) :131-134

[8] Pressure transmitting medium Daphne 7474 solidifying at 3.7 GPa at room temperature [J].

Murata, Keizo ;

Yokogawa, Keiichi ;

Yoshino, Harukazu ;

Klotz, Stefan ;

Munsch, Pascal ;

Irizawa, Akinori ;

Nishiyama, Mototsugu ;

Iizuka, Kenzo ;

Nanba, Takao ;

Okada, Tahei ;

Shiraga, Yoshitaka ;

Aoyama, Shoji .

REVIEW OF SCIENTIFIC INSTRUMENTS, 2008, 79 (08)

[9] New iron-based arsenide oxides (Fe2As2)(Sr4M2O6)(M = Sc, Cr) [J].

Ogino, Hiraku ;

Katsura, Yukari ;

Horii, Shigeru ;

Kishio, Kohji ;

Shimoyama, Jun-ichi .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2009, 22 (08)

[10] Superconductivity at 17 K in (Fe2P2)(Sr4Sc2O6): a new superconducting layered pnictide oxide with a thick perovskite oxide layer [J].

Ogino, Hiraku ;

Matsumura, Yutaka ;

Katsura, Yukari ;

Ushiyama, Koichi ;

Horii, Shigeru ;

Kishio, Kohji ;

Shimoyama, Jun-ichi .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2009, 22 (07)

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