Novel Zn9-cluster compounds RE2Zn6Ge3 (RE: La, Ce, Pr, Nd, Sm, Gd):: crystal structure and physical properties

被引：14

作者：

Grytsiv, A

Bauer, E

Berger, S

Hilscher, G

Michor, H

Paul, C

Rogl, P

Daoud-Aladine, A

Keller, L

Roisnel, T

Noel, H

机构：

[1] Univ Vienna, Inst Phys Chem, A-1090 Vienna, Austria

[2] TU Wien, Inst Festkorperphys, A-1040 Vienna, Austria

[3] PSI, Lab Neutronenstreuung, CH-5232 Villigen, Switzerland

[4] ETH, CH-5232 Villigen, Switzerland

[5] Univ Rennes 1, Chim Solide & Inorgan Mol Lab, CNRS, UMR 6511, F-35042 Rennes, France

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2003年 / 15卷 / 19期

关键词：

D O I：

10.1088/0953-8984/15/19/308

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A novel ternary structure type has been determined from single crystals of Ce2Zn6Ge3 grown from indium-zinc flux solvent. The Ce2Zn6Ge3 type is hexagonal (a = 0.767 69(2) nm; c = 0.41159(2) nm) with space group P62m, Z = 1. Isotypic compounds with La, Pr, Nd, Sm and Gd were synthesized by reaction sintering, and their isotypic crystal. structures were confirmed from Rietveld refinements. These novel temaries show metallic behaviour and their ground state depends on the particular rare earth ion. Long-range magnetic order was deduced for the compounds from Ce to Gd, with a maximum transition temperature T-N similar to 29 K for Gd2Zn6Ge3. While the compounds with Ce and Pr exhibit a spontaneous magnetic type of order, those with Nd, Sm and Gd are antiferromagnetic. The magnetic structures of Pr2Zn6Ge3 and Nd2Zn6Ge3 were resolved on the basis of neutron powder diffraction performed at 1.5 K.

引用

页码：3053 / 3067

页数：15

共 28 条

[1] Magnetism and heavy fermions in YbRhSn and YbPtSn [J].

Andraka, B ;

Pietri, R ;

Kaczorowski, D ;

Leithe-Jasper, A ;

Rogl, P .

JOURNAL OF APPLIED PHYSICS, 2000, 87 (09) :5149-5151

[2]

[Anonymous], 1998, NONIUS KAPPA CCD PRO

[3] The ternary Gd-Zn-Ge system [J].

Demchenko, P ;

Bodak, O ;

Muratova, L .

JOURNAL OF ALLOYS AND COMPOUNDS, 2002, 339 (1-2) :100-104

[4]

Elwell D., 1975, CRYSTAL GROWTH HIGH

[5] THERMOELECTRIC-POWER OF HEAVY-FERMION COMPOUNDS [J].

FISCHER, KH .

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 1989, 76 (03) :315-326

[6]

Fisk Z., 1989, HDB PHYS CHEM RARE E, V12, P53

[7] EuZn2Si2 and EuZn2Ge2 grown from Zn or Ga(In)/Zn flux [J].

Grytsiv, A ;

Kaczorowski, D ;

Leithe-Jasper, A ;

Rogl, P ;

Godart, C ;

Potel, M ;

Noël, H .

JOURNAL OF SOLID STATE CHEMISTRY, 2002, 163 (01) :37-43

[8] Structure and physical properties of the thermoelectric skutterudites EuyFe4-xCoxSb12 -: art. no. 094411 [J].

Grytsiv, A ;

Rogl, P ;

Berger, S ;

Paul, C ;

Bauer, E ;

Godart, C ;

Ni, B ;

Abd-Elmeguid, MM ;

Saccone, A ;

Ferro, R ;

Kaczorowski, D .

PHYSICAL REVIEW B, 2002, 66 (09) :944111-9441111

[9] Novel ytterbium-zinc-silicides and germanides grown from zinc-flux [J].

Grytsiv, A ;

Leithe-Jasper, A ;

Flandorfer, H ;

Rogl, P ;

Hiebl, K ;

Godart, C ;

Velikanova, T .

JOURNAL OF ALLOYS AND COMPOUNDS, 1998, 266 (1-2) :7-12

[10] New compounds of the ThCr2Si2-type and the electronic structure of CaM2Ge2 (M: Mn-Zn) [J].

Kranenberg, C ;

Johrendt, D ;

Mewis, A ;

Pöttgen, R ;

Kotzyba, G ;

Trill, H ;

Mosel, BD .

JOURNAL OF SOLID STATE CHEMISTRY, 2002, 167 (01) :107-112

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