title: Giant Faraday rotation in Bi(x)Ce(3-x)Fe5O12 epitaxial garnet films.
abstract: Thin films of Bi(x)Ce(3-x)Fe(5)O(12) with x = 0.7 and 0.8 compositions were prepared by using pulsed laser deposition. We investigated the effects of processing parameters used to fabricate these films by measuring various physical properties such as X-ray diffraction, transmittance, magnetization and Faraday rotation. In this study, we propose a phase diagram which provides a suitable window for the deposition of Bi(x)Ce(3-x)Fe(5)O(12) epitaxial films. We have also observed a giant Faraday rotation of 1-1.10 degree/µm in our optimized films. The measured Faraday rotation value is 1.6 and 50 times larger than that of CeYIG and YIG respectively. A theoretical model has been proposed for Faraday rotation based on density matrix method and an excellent agreement between experiment and theory is found.
authors.affiliation: Department of Physics & Astronomy, University of Western Ontario, London, Ontario N6A 3K7, Canada. chand579@yahoo.com
authors.forename: M
authors.initials: M
authors.lastname: Chandra Sekhar
authors.forename: Mahi R
authors.initials: MR
authors.lastname: Singh
authors.forename: Shantanu
authors.initials: S
authors.lastname: Basu
authors.forename: Sai
authors.initials: S
authors.lastname: Pinnepalli
mesh_terms: D000327:Adsorption; D001729:Bismuth / Q000737:chemistry*; D002563:Cerium / Q000737:chemistry*; D060526:Magnetic Fields; D008422:Materials Testing; D008567:Membranes, Artificial; D012399:Rotation
chemical_list: D008567:Membranes, Artificial; D002563:Cerium; D001729:Bismuth