Strong magnetoelastic coupling in orthorhombic Eu1-xYxMnO3 manganite

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Agostinho A Moreira (Author) FCUP; Almeida, A (Author) FCUP; Ferreira, WS (Author) Other; Araujo, JP (Author) FCUP; Pereira, AM (Author) FCUP; Chaves, MR (Author) Other; Costa, MMR (Author) Other; Khomchenko, VA (Author) Other; Kreisel, J (Author) Other; Chernyshov, D (Author) Other; Vilela, SMF (Author) Other; Tavares, PB (Author) Other

Journal

Title: Physical Review B - Condensed Matter and Materials Physics

Vol. 82

ISSN: 1098-0121

Publisher: American Physical Society

Indexing

ISI Web of Knowledge - 19 Citations

Scopus - 20 Citations

Scientific classification

FOS: Natural sciences > Physical sciences

Other information

Authenticus ID: P-003-2WW

DOI: 10.1103/physrevb.82.094418

Abstract (EN): This work reports an experimental study on the temperature dependence of the structural parameters in orthorhombic Eu1-xYxMnO3 system at low temperatures, by using synchrotron x-ray diffraction technique. A significant magnetoelastic coupling is revealed by anomalies observed in lattice parameters at the magnetic phase transitions, apparent also in both Mn-O bond lengths and Mn-O1-Mn bond angle. Furthermore, signatures of the lattice deformations across the magnetic phase transitions were evidenced by anomalies in the temperature dependence of the lattice mode involving rotations of the MnO6 octahedra. These anomalies confirm the important role of the spin-phonon coupling in these materials.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9