PREPARATION AND CHARACTERIZATION OF A NEW LAYERED COBALTITE, TLSR2COO5

Authors
COUTANCEAU M DOUMERC JP GRENIER JC MAESTRO P POUCHARD M SEGUELONG T
Citation
M. Coutanceau et al., PREPARATION AND CHARACTERIZATION OF A NEW LAYERED COBALTITE, TLSR2COO5, Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie, 320(12), 1995, pp. 675-680
Citations number
11
Categorie Soggetti
Multidisciplinary Sciences
Journal title
Comptes rendus de l'Academie des sciences. Serie II. Mecanique, physique, chimie, astronomie → ACNP
ISSN journal
12518069
Volume
320
Issue
12
Year of publication
1995
Pages
675 - 680
Database
ISI
SICI code
1251-8069(1995)320:12<675:PACOAN>2.0.ZU;2-C
Abstract
A new thallium strontium cobaltite TlSr2CoO5 has been prepared by inte raction of Tl2O3 with SrO and Sr2Co2O5 in gold tubes at 900 degrees C. Actually the investigated sample is thallium deficient and can be for mulated Tl1-deltaSr2Co1-tau3+Cotau4+O5-epsilon with delta congruent to 0.07, tau congruent to 0.05 and epsilon congruent to 0.07. The compou nd undergoes a structural change at room temperature that is correlate d with both a metal-insulator transition and a spin transition. The st ructures of the high and low temperature phases are very close to that of the tetragonal form of TlSr2CuO5.