Title :
Magnetism and Magnetooptical Effects in Ce–Fe Oxides
Author :
Bolduc, M. ; Taussig, A.R. ; Rajamani, A. ; Dionne, G.F. ; Ross, Caroline
Author_Institution :
Dept. of Mater. Sci. & Eng., MIT
Abstract :
The magnetic and magnetooptical properties of CeFeO3(CFO) and YCeCoFeO6(YCFCO) films grown by pulsed laser deposition onto MgO or SrTiO3(100) substrates at ~10-5 Torr or at 6 mTorr O2 are studied. Faraday rotation hysteresis loops were obtained at the 1.55-mum wavelength, yielding a saturation of ~0.6 deg/mum in all CFO films and ~0.25 deg/mum in the YCFCO film grown under vacuum. Optical measurements give a refractive index of 2.9 and an optical absorption of 1.8 dB/mum at the same wavelength. The corresponding saturation magnetization in CFO films reaches 45 emu/cm3 at room temperature. Interpretation of the magnetic and magnetooptical properties is based on the electronic structure and optical transitions of Ce3+ in an iron garnet or orthoferrite lattice
Keywords :
Faraday effect; cerium alloys; garnets; iron alloys; light absorption; magnesium alloys; magnetic hysteresis; magnetic thin films; pulsed laser deposition; refractive index; strontium alloys; 1.55 micron; CeFeO3; Faraday rotation hysteresis loops; YCFCO film; YCeCoFeO6; electronic structure; magnetic properties; magnetism effects; magnetooptical effects; magnetooptical properties; optical absorption; optical measurements; optical transitions; pulsed laser deposition; refractive index; saturation magnetization; Magnetic films; Magnetic properties; Magnetooptic effects; Optical films; Optical pulses; Optical refraction; Optical saturation; Optical variables control; Pulsed laser deposition; Saturation magnetization; Laser ablation; magnetooptic films; optical isolators;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.880514
