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Low field driven latching-type Bi3Fe5O12/Gd3Ga5O12 magneto-optical display
KTH, Skolan för informations- och kommunikationsteknik (ICT), Materialfysik.
KTH, Skolan för informations- och kommunikationsteknik (ICT), Materialfysik, Materialfysik, MF.ORCID-id: 0000-0001-8774-9302
2006 (engelsk)Inngår i: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 88, nr 24Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Series of heteroepitaxial all-garnet magneto-optical (MO) Bi3Fe5O12n/Gd3Ga5O12m /BIG(n)/GGG(m), n= 1, 2, 3, 4, 5 and m=1 and 2 are the numbers of unit cells) nanostructured multilayers have been sintered by pulsed laser deposition technique. Processing parameters and structure of grown films have been optimized to obtain perpendicular magnetic anisotropy and square hysteresis loop with low coercive and saturation magnetic fields. Regular alternating of lattice mismatched BIG and GGG atomic layers inhibited nucleation of misfit dislocations; thus a long range coherent compressive strain was preserved through the whole thickness of BIG(n)/GGG(m) multilayer stack. 2.5 mu m thick BIG(3)/GGG(2) sample (1200 BIG and 800 GGG unit cells) at lambda= 678 nm shows MO Faraday rotation Phi(F)= +/- 1.4 degrees, transmittance of 82%, attenuation alpha=3400 dB/cm, squareness of magnetization loop (remnant-to-saturation magnetizations ratio) as high as 92%, and saturation and coercive fields as low as 56 and 25 Oe, respectively. MO remanence (latching capability) enables application of nanostructured garnet as a magnetic relief replicator/visualizer and as a material for low power consuming displays.

sted, utgiver, år, opplag, sider
2006. Vol. 88, nr 24
Emneord [en]
faraday rotators
Identifikatorer
URN: urn:nbn:se:kth:diva-15752DOI: 10.1063/1.2213973ISI: 000238314800060Scopus ID: 2-s2.0-33745221423OAI: oai:DiVA.org:kth-15752DiVA, id: diva2:333794
Merknad
QC 20100525Tilgjengelig fra: 2010-08-05 Laget: 2010-08-05 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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