Microwave and magneto-optic properties of pulsed laser deposited bismuth iron garnet films
2001 (English)In: IEEE transactions on magnetics, ISSN 0018-9464, E-ISSN 1941-0069, Vol. 37, no 4, 2454-2456 p.Article in journal (Refereed) Published
We report on processing and comparative characterization of epitaxial Bi3Fe5O12 (BIG) films grown by pulsed laser ablation of a precursor oxide target onto (NdGd)(3)(ScGa)(5)O-12 [NGSGG(111)] and Gd-3 (ScGa)(5)O-12 (GSGG(001)] single crystals. Comprehensive X-ray diffraction analyses reveal the epitaxial quality of the BIG films: they are single phase, exclusively (111) and (001) oriented with less than 0.4 degrees and 0.06 degrees of the full width at half maximum of the rocking curve of main texture Bragg reflection [(111) for NGSGG and (001) for GSGG substrate, respectively]. The films are strongly in-plane textured with cube-on-cube film-to-substrate epitaxial relationship. VSM and ferromagnetic resonance measurements revealed in-plane magnetization in BIG/GSGG(001) film, while the BIG/NGSGG(111) film was found to have perpendicular magnetization. For BIG(001) and (111) films the saturation magnetization 4 piM(s) was found to be 1400 and 1200 Gs; the Faraday rotation at 635 nm was -7.8 and -6.7 deg/mum; the constant of uniaxial magnetic anisotropy was K-u* = -8.70 X 10(4) and +1.16 x 10(4) erg/cm(3); the constant of cubic magnetic anisotropy K-1 = -3.6 x 10(3) and -7.14 x 10(3) erg/cm(3). High Faraday rotation and low coercive field (less than or equal to 40 Oe) of BIG/GSGG(001) films show promise for their use in integrated magneto-optic applications.
Place, publisher, year, edition, pages
2001. Vol. 37, no 4, 2454-2456 p.
bismuth iron garnet thin film, Faraday rotation, ferromagnetic resonance, magnetic anisotropy
IdentifiersURN: urn:nbn:se:kth:diva-6463DOI: 10.1109/20.951201ISI: 000170910900375OAI: oai:DiVA.org:kth-6463DiVA: diva2:11184
QC 201009222004-11-122004-11-122010-09-22Bibliographically approved