Partial suppression of structural distortion in epitaxially grown BaBiO3 thin films

被引：20

作者：

Inumaru, Kei ^{[1
]}

Miyata, Hajime ^{[1
]}

Yamanaka, Shoji ^{[1
]}

机构：

[1] Hiroshima Univ, Dept Appl Chem, Grad Sch Engn, Hiroshima 7398527, Japan

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.78.132507

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thin films of BaBiO(3), the parent compound of Ba(1-x)K(x)BiO(3) superconducting oxide with T(c)similar to 30 K, were prepared by pulsed laser deposition and their structures were investigated by x-ray diffraction analysis. It is known that bulk BaBiO(3) crystal adopts structures having two kinds of distortions, namely, tilting and breathing of BiO(6) octahedra below 750-800 K. Epitaxial BaBiO(3) (001) film was grown on MgO (001) substrate at 773 K. In the film, the BiO(6) tilting mode was suppressed at ambient temperature and the structure was cubic with superlattice breathing distortion. This is the experimental realization of BaBiO(3) having cubic structure with only superlattice breathing distortion at ambient temperature. An electric transport measurement showed that the film is insulating. These results show direct experimental evidence for the idea provided by theoretical studies that the breathing distortion solely can open the gap around the Fermi energy of BaBiO(3) phase.

引用

页数：4

共 34 条

[1] Small-polaron excitations in Ba1-xKxBiO3 studied by optical reflectivity measurements -: art. no. 125103 [J].

Ahmad, J ;

Uwe, H .

PHYSICAL REVIEW B, 2005, 72 (12)

[2] Anomalous temperature dependence of the optical phonon properties of Ba1-xKxBiO3 single crystals [J].

Ahmad, J ;

Uwe, H .

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 2004, 412 :288-292

[3] Effects of in-plane strain on magnetism in LaMnO3 thin films [J].

Ahn, KH ;

Millis, AJ .

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 2002, 16 (20-22) :3281-3284

[4] Polaron and bipolaron defects in a charge density wave:: A model for lightly doped BaBiO3 -: art. no. 115112 [J].

Bischofs, IB ;

Kostur, VN ;

Allen, PB .

PHYSICAL REVIEW B, 2002, 65 (11) :1151121-1151127

[5] SUPERCONDUCTIVITY NEAR 30-K WITHOUT COPPER - THE BA0.6K0.4BIO3 PEROVSKITE [J].

CAVA, RJ ;

BATLOGG, B ;

KRAJEWSKI, JJ ;

FARROW, R ;

RUPP, LW ;

WHITE, AE ;

SHORT, K ;

PECK, WF ;

KOMETANI, T .

NATURE, 1988, 332 (6167) :814-816

[6] Metal/semiconductor phase transition in chromium nitride(001) grown by rf-plasma-assisted molecular-beam epitaxy [J].

Constantin, C ;

Haider, MB ;

Ingram, D ;

Smith, AR .

APPLIED PHYSICS LETTERS, 2004, 85 (26) :6371-6373

[7] MIXED-VALENT BA2BI3+BI5+O6 - STRUCTURE AND PROPERTIES VS TEMPERATURE [J].

COX, DE ;

SLEIGHT, AW .

ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL SCIENCE, 1979, 35 (JAN) :1-10

[8] Surface structure analysis of atomically smooth BaBiO3 Films [J].

Gozar, A. ;

Logvenov, G. ;

Butko, V. Y. ;

Bozovic, I. .

PHYSICAL REVIEW B, 2007, 75 (20)

[9] Structural distortion and suppression of superconductivity in stoichiometric B1-MoN epitaxial thin films [J].

Inumaru, K ;

Baba, K ;

Yamanaka, S .

PHYSICAL REVIEW B, 2006, 73 (05)

[10] Synthesis and characterization of superconducting β-Mo2N crystalline phase on a Si substrate:: An application of pulsed laser deposition to nitride chemistry [J].

Inumaru, K ;

Baba, K ;

Yamanaka, S .

CHEMISTRY OF MATERIALS, 2005, 17 (24) :5935-5940

← 1 2 3 4 →