Premium
Investigation on (Sr,Co)Bi 2 Nb 2 O 9 thin films: A lead‐free room temperature multiferroics
Author(s) -
Kumar Ashok,
Collazo Bryan,
Sánchez Dilsom,
Katiyar R. S.
Publication year - 2010
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.200903321
Subject(s) - condensed matter physics , materials science , coercivity , dielectric , multiferroics , magnetization , thin film , saturation (graph theory) , magnetic hysteresis , ferroelectricity , magnetic field , nanotechnology , optoelectronics , physics , mathematics , quantum mechanics , combinatorics
Novel room temperature single phase multiferroic 10% Co doped SrBi 2 Nb 2 O 9 (SCBN) thin films were fabricated on Pt/Ti/SiO 2 /Si(100) substrate by pulse laser deposition. The surface morphology indicates homogeneous grains with average grain size and surface roughness of ∼40–130 nm and 6 nm, respectively. High dielectric constant, low dielectric loss <2–5%, negligible frequency independent conductivity, moderate polarization, frequency dependent coercive field, and weak saturation magnetization were observed. The change in the shape of magnetic hysteresis and values of coercive field along in‐plane and out‐of‐plane M–H hysteresis indicates a magnetic anisotropy. The presence of magnetic moments and electric dipole in the same plane suggest mutual cooperation between electric and magnetic ordering on the mesoscopic and microscopic scale. (© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)