Structural and insulator-to-metal phase transition at 50 GPa in GdMnO3

• Type: Article in International Scientific Journal
• Date: 2012

Authors

Oliveira, J (Author) Other; Agostinho A Moreira (Author) FCUP; Almeida, A (Author) FCUP; Rodrigues, VH (Author) Other; Costa, MMR (Author) Other; Tavares, PB (Author) Other; Bouvier, P (Author) Other; Guennou, M (Author) Other; Kreisel, J (Author) Other

Journal

Title: Physical Review B - Condensed Matter and Materials Physics

Vol. 85

ISSN: 1098-0121

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 27 Citations

Scopus - 28 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-002-CYX

DOI: 10.1103/physrevb.85.052101

Abstract (EN): We present a study of the effect of very high pressure on the orthorhombic perovskite GdMnO3 by Raman spectroscopy and synchrotron x-ray diffraction up to 53 GPa. The experimental results yield a structural and insulator-to-metal phase transition close to 50 GPa, from an orthorhombic to a metrically cubic structure. The phase transition is of first order with a pressure hysteresis of about 6 GPa. The observed behavior under very high pressure might well be a general feature in rare-earth manganites.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 5