DocumentCode :
1050675
Title :
Effects of some transition metal ions on the visible and infrared Faraday rotation of gadolinium iron garnet
Author :
Egashira, Kazumichi ; Manabe, Toyotaka
Author_Institution :
Nippon Telegraph and Telephone Public Corporation, Tokai, Ibaraki, Japan
Volume :
8
Issue :
3
fYear :
1972
fDate :
9/1/1972 12:00:00 AM
Firstpage :
646
Lastpage :
648
Abstract :
Effects of such ions as Co2+, Co3+, and Fe2+on the magnetooptical properties of Gd3Fe5O12were investigated. Single crystals in which a portion of Fe3+ions were substituted by these ions were grown from a molten PbO-PbF2flux. It was found that Co2+ions affected the infrared Faraday rotation remarkably, as well as the visible one, both due to spin-allowed crystal-field transitions. Co3+ions also affected the infrared rotation, but affected the visible one very little. The crystals which contain Fe2+ions exhibited no anomalous effect on the Faraday rotation in the infrared region, where a broad absorption occurred due to a charge transfer between Fe2+and Fe3+ions. In the visible region, however, both the Faraday rotation and the figure of merit were improved. The dominant contributor to this improvement is not likely to be Fe2+ions, but Pb2+ions which originate from the flux.
Keywords :
Faraday effect; GdIGs; Magnetooptic effects; Crystals; Doping; Electromagnetic wave absorption; Garnets; Iron; Magnetic materials; Magnetic properties; Magnetooptic effects; Telegraphy; Telephony;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1972.1067450
Filename :
1067450
Link To Document :
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