ISSN:
1432-0630
Keywords:
75.80.+q
;
76.50.+g
Source:
Springer Online Journal Archives 1860-2000
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
Abstract A novel method for measuring magnetostriction constants is presented. A strain, periodic in time, applied to the sample, causes a modulation of the ferromagnetic resonance line position. The height of the signal obtained after phase-sensitive detection is proportional to the strain modulation depth. The appropriate magnetostriction constant λ is obtained by comparing the height of the SMFMR signal with that of the FMR line, as recorded by means of magnetic field modulation. Features of the new technique are: 1) high sensitivity: λmin≃ 10−9 forM=100 Oe and linewidth ΔH d=1 Oe; 2) λ's belonging to distinct precession modes are separately determined; 3) applicable to thin layers for which strain gauge techniques cannot be used; 4) wide temperature range: 1.2 K〈T〈300 K; 5) uniform stress. An illustrative example (YIG layer on GGG substrate) is given.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00885859
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