Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
SUPERCONDUCTIVITY IN POLYCRYSTALLINE PRESSED PELLETS OF KAPPA-(BEDT-TTF)2I3
Autore:
BALTHES E; BREINING A; KAHLICH S; MOLDENHAUER J; SCHWEITZER D; BELE P; BRUNNER H; HEINEN I; NUBER B; KELLER HJ;
Indirizzi:
UNIV STUTTGART,INST PHYS 3 PFAFFENWALDRING 57 W-7000 STUTTGART 80 GERMANY MED FORSCH AG,MPI W-6900 HEIDELBERG GERMANY UNIV HEIDELBERG,INST ANORGAN CHEM W-6900 HEIDELBERG GERMANY
Titolo Testata:
Synthetic metals
fascicolo: 2-3, volume: 56, anno: 1993,
pagine: 2859 - 2864
SICI:
0379-6779(1993)56:2-3<2859:SIPPPO>2.0.ZU;2-H
Fonte:
ISI
Lingua:
ENG
Soggetto:
AMBIENT-PRESSURE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
E. Balthes et al., "SUPERCONDUCTIVITY IN POLYCRYSTALLINE PRESSED PELLETS OF KAPPA-(BEDT-TTF)2I3", Synthetic metals, 56(2-3), 1993, pp. 2859-2864

Abstract

Investigations of the transport properties of single crystals and polycrystalline pressed samples of K-(BEDT-TTF)213 are presented. In contrast to polycrystalline pressed samples of K-(BEDT-TTF)2Cu(NCS)2 and K-(BEDT-TTF)2Cu[N(CN)2]Br those of K-(BEDT-TTF)2I3 show bulk superconductivity indicating that the loss of superconductivity in the first twotypes of samples is not due to the special structure of the K- phase,but probably due to a disproportionation of Cu1+ under the anisotropic pressure during the preparation of the samples. Annealing the singlecrystals as well as the polycrystalline pressed samples of K-(BEDT-TTF)2I3 at 75-degrees-C for a few days results in a structural transfomation with an increase in the transition temperature for superconductivity (about 8 K for the crystals). IR-spectra indicate a transfomation into a structure which is identical with alpha(t) - (BEDT - TTF)2I3, which seems to be the thermodynamically most stable phase of the several (BEDT-TTF)2I3 phases.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/09/20 alle ore 07:39:13