Properties of Exchange Coupled All-garnet Magneto-Optic Thin Film Multilayer Structures

Materials

Mohammad Nur-E-Alam¹  Mikhail Vasiliev¹  Viacheslav A. Kotov⁴  Dmitry Balabanov³  Ilya Akimov²  Kamal Alameh¹ 

[1] Electron Science Research Institute, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia; E-Mails:;Experimentelle Physik 2, Technische Universität Dortmund, D-44221 Dortmund, Germany; E-Mail:;Moscow Institute of Physics and Technology, 9 Institutskiy Per., Dolgoprudny, Moscow Region 141700, Russia; E-Mail:;Institute of Radio Engineering and Electronics, Russian Academy of Sciences, 11 Mohovaya St, Moscow 125009, Russia; E-Mail:

关键词: magneto-optic;    garnet;    multilayer thin films;    magnetic media;    nanophotonics;    integrated optics;   

DOI  :  10.3390/ma8041976

来源: mdpi

【 摘 要 】

The effects of exchange coupling on magnetic switching properties of all-garnet multilayer thin film structures are investigated. All-garnet structures are fabricated by sandwiching a magneto-soft material of composition type Bi_1.8Lu_1.2Fe_3.6Al_1.4O₁₂ or Bi₃Fe₅O₁₂:Dy₂O₃ in between two magneto-hard garnet material layers of composition type Bi₂Dy₁Fe₄Ga₁O₁₂ or Bi₂Dy₁Fe₄Ga₁O₁₂:Bi₂O₃. The fabricated RF magnetron sputtered exchange-coupled all-garnet multilayers demonstrate a very attractive combination of magnetic properties, and are of interest for emerging applications in optical sensors and isolators, ultrafast nanophotonics and magneto-plasmonics. An unconventional type of magnetic hysteresis behavior not observed previously in magnetic garnet thin films is reported and discussed.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.