DocumentCode :
1049978
Title :
On the anisotropy of the exchange interactions in the rare earth orthoferrites
Author :
Belov, K. ; Kadomtzeva, A.
Author_Institution :
Moscow State University, Moscow, USSR.
Volume :
8
Issue :
3
fYear :
1972
fDate :
9/1/1972 12:00:00 AM
Firstpage :
449
Lastpage :
449
Abstract :
This paper presents some new results on orthoferrite magnetic properties. We have measured the temperature dependence of the spontaneous magnetization for neodim, samarium, and thulium orthoferrites having compensation temperatures. The measurement of the magnetic permeabilities near these temperatures makes it possible to find the effective fields of exchange interactions between the iron and rare earth ions and to prove that these interactions have strong anisotropy. For example, the exchange interactions for TuFeO3have opposite signs along the a and c axes, so that the spin reorientation results in the change of the orthoferrite spontaneous magnetization. The different mechanisms of the anisotropy of the iron and rare earth ion exchange interactions are discussed.
Keywords :
Orthoferrites; Rare earth-iron compounds; Anisotropic magnetoresistance; Elementary particle exchange interactions; Iron; Magnetic field measurement; Magnetic properties; Magnetization; Permeability measurement; Samarium; Temperature dependence; Temperature measurement;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1972.1067388
Filename :
1067388
Link To Document :
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