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Title: Temperature-Dependent Lag in Polycrystalline Yttrium-Iron Garnet

Abstract

Certain samples of polycrystalline yttrium--iron garnet are characterized by a room-temperature permesbility spectrum having two regions of dispersion, one at nmicrowaves, the other at rf frequency. The former dispersion is identified as gyromagnetic in origin. The rf dispersion, which exhibits a temperature-activated shift to lower frequency with decreasing temperature, appears due to an electron-diffusion controlled domnin-wall relaxation. The activation energy for the process is 0.38 ev.

Authors:
;
Publication Date:
Research Org.:
Massachusetts Inst. of Tech., Cambridge, Mass.
Sponsoring Org.:
USDOE
OSTI Identifier:
4250613
NSA Number:
NSA-13-013782
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 30; Journal Issue: 4; Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
Country unknown/Code not available
Language:
English
Subject:
PHYSICS AND MATHEMATICS; ALUMINUM SILICATES; CRYSTALS; DIFFRACTION; DIFFUSION; DIFFUSION LENGTH; ENERGY; EV RANGE; EXCITATION; FREQUENCY; GARNETS; GYROMAGNETIC RATIO; IRON; MAGNETIC MOMENTS; MICROWAVES; RADIO WAVES; RELAXATION; SPECTRA; SPIN; SUSCEPTIBILITY; TEMPERATURE; YTTRIUM

Citation Formats

Epstein, D. J., and Frackiewicz, B.. Temperature-Dependent Lag in Polycrystalline Yttrium-Iron Garnet. Country unknown/Code not available: N. p., 1959. Web. doi:10.1063/1.2185939.
Epstein, D. J., & Frackiewicz, B.. Temperature-Dependent Lag in Polycrystalline Yttrium-Iron Garnet. Country unknown/Code not available. doi:10.1063/1.2185939.
Epstein, D. J., and Frackiewicz, B.. Thu . "Temperature-Dependent Lag in Polycrystalline Yttrium-Iron Garnet". Country unknown/Code not available. doi:10.1063/1.2185939.
@article{osti_4250613,
title = {Temperature-Dependent Lag in Polycrystalline Yttrium-Iron Garnet},
author = {Epstein, D. J. and Frackiewicz, B.},
abstractNote = {Certain samples of polycrystalline yttrium--iron garnet are characterized by a room-temperature permesbility spectrum having two regions of dispersion, one at nmicrowaves, the other at rf frequency. The former dispersion is identified as gyromagnetic in origin. The rf dispersion, which exhibits a temperature-activated shift to lower frequency with decreasing temperature, appears due to an electron-diffusion controlled domnin-wall relaxation. The activation energy for the process is 0.38 ev.},
doi = {10.1063/1.2185939},
journal = {Journal of Applied Physics},
number = 4,
volume = 30,
place = {Country unknown/Code not available},
year = {Thu Jan 01 00:00:00 EST 1959},
month = {Thu Jan 01 00:00:00 EST 1959}
}