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Title: Properties of ferroelectric/ferromagnetic thin film heterostructures

Ferroelectric/ferromagnetic thin film heterostructures, SrBi{sub 2}Ta{sub 2}O{sub 9}/BaFe{sub 12}O{sub 19} (SBT/BaM), were grown on platinum-coated Si substrates using metal-organic decomposition. X-ray diffraction patterns confirmed that the heterostructures contain only SBT and BaM phases. The microwave properties of these heterostructures were studied using a broadband ferromagnetic resonance (FMR) spectrometer from 35 to 60 GHz, which allowed us to determine gyromagnetic ratio and effective anisotropy field. The FMR linewidth is as low as140 Oe at 58 GHz. In addition, measurements of the effective permittivity of the heterostructures were carried out as a function of bias electric field. All heterostructures exhibit hysteretic behavior of the effective permittivity. These properties indicate that such heterostructures have potential for application in dual electric and magnetic field tunable resonators, filters, and phase shifters.
Authors:
 [1] ;  [2] ; ; ; ;  [1] ;  [1] ;  [2]
  1. Center for Magnetism and Magnetic Nanostructures, University of Colorado Colorado Springs, 1420 Austin Bluffs Pkwy, Colorado Springs, Colorado 80918 (United States)
  2. (China)
Publication Date:
OSTI Identifier:
22273830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 17; Conference: 55. annual conference on magnetism and magnetic materials, Atlanta, GA (United States), 14-18 Nov 2010; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BARIUM COMPOUNDS; BISMUTH COMPOUNDS; ELECTRIC FIELDS; FERRITES; FERROELECTRIC MATERIALS; FERROMAGNETIC MATERIALS; FERROMAGNETIC RESONANCE; GHZ RANGE; GYROMAGNETIC RATIO; HETEROJUNCTIONS; MAGNETIC FIELDS; MICROWAVE RADIATION; ORGANOMETALLIC COMPOUNDS; PERMITTIVITY; PHASE SHIFT; SILICON; STRONTIUM COMPOUNDS; TANTALATES; THIN FILMS; X-RAY DIFFRACTION