DocumentCode :
964700
Title :
Temperature dependence of the effective linewidth in porous and fine grain polycrystalline yttrium iron garnet
Author :
Kaelberer, R.E. ; Patton, C.E.
Author_Institution :
Colorado State University, Fort Collins, Colorado, USA.
Volume :
13
Issue :
5
fYear :
1977
fDate :
9/1/1977 12:00:00 AM
Firstpage :
1230
Lastpage :
1232
Abstract :
Data on the temperature dependence of the off-resonance effective linewidth 
have been obtained at 9.94 GHz for porous and fine grained samples of polycrystalline YIG. The high field increases with decreasing temperature from 300K to 250K. From 250K to 100K, is constant. is linearly proportional to porosity, with about 0.4 Oe/%, which is superimposed on a porosity independent contribution which increases from a few tenths Oe at 300K to about 2.2 Oe below 250K. For samples with an average grain size ao of 3μ to 
is proportional to 
at 300K and to 
below 250K. These results are discussed in terms of a magnetostriction model and a spin-wave transit time model.
have been obtained at 9.94 GHz for porous and fine grained samples of polycrystalline YIG. The high field increases with decreasing temperature from 300K to 250K. From 250K to 100K, is constant. is linearly proportional to porosity, with about 0.4 Oe/%, which is superimposed on a porosity independent contribution which increases from a few tenths Oe at 300K to about 2.2 Oe below 250K. For samples with an average grain size a is proportional to at 300K and to below 250K. These results are discussed in terms of a magnetostriction model and a spin-wave transit time model.Keywords :
Magnetic thermal factors; YIG materials/devices; Crystalline materials; Garnets; Grain size; Iron; Magnetic field measurement; Magnetic materials; Magnetostriction; Scattering; Temperature dependence; Yttrium;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.1977.1059673
Filename :
1059673
Link To Document :
