NDLI: Ellipsometry and magnetooptical Kerr effect study of nanocrystalline zinc ferrite thin films

Content Provider	IEEE Xplore Digital Library
Author	Siroky, P. Pistora, J. Sahoo, S.C. Liskova-Jakubisova, E. Visnovsky, S. Prasad, S. Hrabovsky, D. Bohra, M.
Copyright Year	2015
Description	Author affiliation: Dept. of Phys., VSB - Tech. Univ. of Ostrava, Ostrava, Czech Republic (Siroky, P.; Pistora, J.) \|\| Inst. of Phys., Charles Univ., Prague, Czech Republic (Liskova-Jakubisova, E.; Visnovsky, S.) \|\| Dept. of Phys., Indian Inst. of Technol., Mumbai, Mumbai, India (Prasad, S.) \|\| Dept. of Phys., Central Univ. of Kerala, Kasaragod, India (Sahoo, S.C.) \|\| Okinawa Inst. of Sci. & Technol. Grad. Univ. (OIST), Okinawa, Japan (Hrabovsky, D.; Bohra, M.)
Abstract	Laser ablated zinc ferrite $(ZnFe_{2}O_{4})$ films deposited at $O_{2}$ pressure of 0.16 mbar onto fused quartz substrates are nanocrystalline and display net magnetic moment dependent on the substrate temperature $(T_{s})$ during deposition. At $T_{s}$ = 350 °C, the room $4πM_{s}$ reached the maximum of 3 kG. The films were studied by spectral ellipsometry and magnetooptical (MO) Kerr effect spectroscopy at photon energies between 1 and 5 eV at room temperature in the longitudinal magnetic flux density 1.14 T. The optical and MO spectra show structural details typical for inverted spinels. Our $ZnFe_{2}O_{4}$ samples display amplitudes somewhat reduced with respect to those in other ferrimagnetic oxides with the exchange coupled $Fe^{3+}$ pairs, i.e., in $Li_{0.5}Fe_{2.5}O_{4}$ and $MgFe_{2}O_{4}$ spinel ferrite and magnetoplumbite, $PbFe_{12}O_{19}.$ The lower amplitudes are probably due to the interplay of nanocrystalline nature and lower degree of spinel inversion in the $ZnFe_{2}O_{4}$ laser ablated films.
Starting Page	253
Ending Page	256
File Size	780260
Page Count	4
File Format	PDF
e-ISBN	9781479967612
DOI	10.1109/ICSPCom.2015.7150657
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-03-16
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Kerr effect Ferrites Spinel Magnetooptical Kerr effect Optical films Nonlinear optics Magnetooptic effects Substrates Ellipsometry
Content Type	Text
Resource Type	Article

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