Germanium Dumbbells in a New Superconducting Modification of BaGe3

被引：11

作者：

Castillo, Rodrigo ^{[1
]}

Baranov, Alexey I. ^{[1
]}

Burkhardt, Ulrich ^{[1
]}

Cardoso-Gil, Raul ^{[1
,2
]}

Schnelle, Walter ^{[1
]}

Bobnar, Matej ^{[1
]}

Schwarz, Ulrich ^{[1
]}

机构：

[1] Max Planck Inst Chem Phys Fester Stoffe, Nothnitzer Str 40, D-01187 Dresden, Germany

[2] Univ Tecn Federico Santa Maria, Dept Ingn Met & Mat, Ave Espana 1680, Valparaiso, Chile

来源：

INORGANIC CHEMISTRY | 2016年 / 55卷 / 09期

关键词：

HIGH-PRESSURE SYNTHESIS; CLATHRATE; DEPENDENCE; ATOMS;

D O I：

10.1021/acs.inorgchem.6b00299

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

We report the high-pressure high-temperature synthesis (P = 15 GPa, T = 1300 K) of BaGe3(tI32) adopting a CaGe3 -type crystal structure. Bonding analysis reveals layers of covalently bonded germanium dumbbells being involved in multicenter Ba-Ge interactions. Physical measurements evidence metal-type electrical conductivity and a transition to a superconducting state at 6.5 K. Chemical bonding and physical properties of the new modification are discussed in comparison to the earlier described hexagonal form BaGe3(hP8) with a columnar arrangement of Ge3 triangles.

引用

页码：4498 / 4503

页数：6

共 31 条

[1] WinCSD: software package for crystallographic calculations (Version 4) [J].

Akselrud, Lev ;

Grin, Yuri .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 2014, 47 :803-805

[2] BaGe5: A New Type of Intermetallic Clathrate [J].

Aydemir, Umut ;

Akselrud, Lev ;

Carrillo-Cabrera, Wilder ;

Candolfi, Christophe ;

Oeschler, Niels ;

Baitinger, Michael ;

Steglich, Frank ;

Grin, Yuri .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (32) :10984-10985

[3]

Bader FW., 1994, Atoms in Molecules: A Quantum Theory

[4]

Baitinger M., 2014, CLATHRATES

[5] Topological analysis of real space properties for the solid-state full-potential APW DFT method [J].

Baranov, Alexey I. ;

Kohout, Miroslav .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 2010, 71 (09) :1350-1356

[6] ESDS AND ESTIMATED PROBABLE-ERROR OBTAINED IN RIETVELD REFINEMENTS WITH LOCAL CORRELATIONS [J].

BERAR, JF ;

LELANN, P .

JOURNAL OF APPLIED CRYSTALLOGRAPHY, 1991, 24 :1-5

[7] Ba8Ge43 revisited:: a 2a′ x 2a′ x 2a′ superstructure of the clathrate-I type with full vacancy ordering [J].

Carrillo-Cabrera, W ;

Budnyk, S ;

Prots, Y ;

Grin, Y .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 2004, 630 (13-14) :2267-2276

[8] Triangular Ge3 Units in a New Modification of EuGe3 [J].

Castillo, Rodrigo ;

Baranov, Alexey I. ;

Burkhardt, Ulrich ;

Grin, Yuri ;

Schwarz, Ulrich .

ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 2015, 641 (02) :355-361

[9] MAGNESIUM CADMIUM ALLOYS .4. THE CADMIUM-RICH ALLOYS - SOME LATTICE PARAMETERS AND PHASE RELATIONSHIPS BETWEEN 25-DEGREES AND 300-DEGREES - STRUCTURE OF THE MGCD3 SUPERLATTICE - SCHOTTKY DEFECTS AND THE ANOMALOUS ENTROPY [J].

EDWARDS, DA ;

WALLACE, WE ;

CRAIG, RS .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1952, 74 (21) :5256-5261

[10] BaSn3:: A superconductor at the border of Zintl phases and intermetallic compounds real-space analysis of band structures [J].

Fässler, TF ;

Kronseder, C .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 1997, 36 (23) :2683-2686

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