Raman spectra and magnetization of all-ferromagnetic superlattices grown on (110) oriented SrTiO{sub 3}

Journal Article · Mon Mar 03 04:00:00 EST 2014 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4867509· OSTI ID:22283050

Behera, B. C.; Ravindra, A. V.; Padhan, P. ^[1]; Prellier, W. ^[2]

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1. Department of Physics, Indian Institute of Technology Madras, Chennai 600036 (India)
2. Laboratoire CRISMAT, CNRS UMR 6508, ENSICAEN, 6 Bd du Marehal Juin, F-14050 Caen Cedex (France)

Superlattices consist of two ferromagnets La{sub 0.7}Sr{sub 0.3}MnO{sub 3} (LSMO) and SrRuO{sub 3} (SRO) were grown in (110)-orientation on SrTiO{sub 3} (STO) substrates. The x-ray diffraction and Raman spectra of these superlattices show the presence of in-plane compressive strain and orthorhombic structure of less than 4 u.c. thick LSMO spacer, respectively. Magnetic measurements reveal several features including reduced magnetization, enhanced coercivity, antiferromagnetic coupling, and switching from antiferromagnetic to ferromagnetic coupling with magnetic field orientations. These magnetic properties are explained by the observed orthorhombic structure of spacer LSMO in Raman scattering which occurs due to the modification in the stereochemistry of Mn at the interfaces of SRO and LSMO.

• OSTI ID: 22283050
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 9 Vol. 104; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ANTIFERROMAGNETISM
COERCIVE FORCE
COUPLING
FERROMAGNETIC MATERIALS
FERROMAGNETISM
INTERFACES
LANTHANUM COMPOUNDS
MAGNETIC FIELDS
MAGNETIC PROPERTIES
MAGNETIZATION
MANGANATES
ORTHORHOMBIC LATTICES
RAMAN SPECTRA
RUTHENIUM OXIDES
STRONTIUM TITANATES
SUPERLATTICES
X-RAY DIFFRACTION