Journal
JOURNAL OF APPLIED PHYSICS
Volume 97, Issue 10, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.1856731
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The temperature dependence of the lowest order magnetic anisotropy constant K-1 and the lowest order saturation magnetostriction constant, (3/2)lambda(100), were measured from 4 K to 300 K for Fe91.4Ga8.6,Fe83.4Ga16.6, and Fe71.5Ga28.5 and were compared to the normalized magnetization power law, m(l(l+1)/2). Fe91.4Ga8.6 maintains the magnetostriction anomaly of Fe (d lambda(100)/dT > 0) and K, is a reasonable fit to the m(l(l+1)/2) power law with K-1(0 K) congruent to 90 kJ/m(3). Fe83.4Ga16.6 does not show a magnetostriction anomaly, but fits the power law remarkably well. Fe71.5Ga28.5 possesses a small K-1(similar to 1 kJ/m(3)) at all temperatures and a large temperature dependent magnetostriction, reaching similar to 800 ppm at low temperature. (c) 2005 American Institute of Physics.
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