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Titolo:
Direct and indirect preparation of layered quaternary manganese tellurides; AMn(x)M(y)Te(2) (A = Li, Na; M = Cu, Ag; x+y <= 2)
Autore:
Kim, JY; Hughbanks, T;
Indirizzi:
Texas A&M Univ, Dept Chem, College Stn, TX 77842 USA Texas A&M Univ College Stn TX USA 77842 t Chem, College Stn, TX 77842 USA
Titolo Testata:
JOURNAL OF ALLOYS AND COMPOUNDS
fascicolo: 1-2, volume: 327, anno: 2001,
pagine: 116 - 120
SICI:
0925-8388(20010830)327:1-2<116:DAIPOL>2.0.ZU;2-L
Fonte:
ISI
Lingua:
ENG
Soggetto:
CAAL2SI2-TYPE STRUCTURE; AMNTE(2);
Keywords:
chalcogenide; chemical synthesis; X-ray diffraction crystal structure; conductivity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
12
Recensione:
Indirizzi per estratti:
Indirizzo: Hughbanks, T Texas A&M Univ, Dept Chem, POB 30012, College Stn, TX 77842 USA Texas A&M Univ POB 30012 College Stn TX USA 77842 X 77842 USA
Citazione:
J.Y. Kim e T. Hughbanks, "Direct and indirect preparation of layered quaternary manganese tellurides; AMn(x)M(y)Te(2) (A = Li, Na; M = Cu, Ag; x+y <= 2)", J ALLOY COM, 327(1-2), 2001, pp. 116-120

Abstract

A series of layered quaternary tellurides with AMn(x)M(y)Te(2) (A=Li, Na M=Cu, Ag; x+y less than or equal to2) compositions were prepared in two different ways; direct synthesis from elemental starting materials and reactionof coinage metals (Cu or Ag) with ternary tellurides, AMnTe(2) (A=Li, Na) with partially empty tetrahedral sites. Products were characterized by single crystal and powder X-ray diffraction, atomic absorption (AA) measurements, and wavelength dispersive spectrometry (WDS). These compounds adopt the CaAl2Si2 structure type (space group Pm (3) over bar1, No. 164), in which Te atoms are arrayed by hexagonal closed packing with random distribution ofMn and M (Cu or Ag) atoms in the tetrahedral sites. Alkali metals reside in octahedral sites between two layers to complete the structure. Resistivity measurements showed that these compounds are either insulators or semiconductors. (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 05/04/20 alle ore 06:34:34