In:
Journal of Applied Physics, AIP Publishing, Vol. 50, No. B3 ( 1979-03-01), p. 2118-2120
Abstract:
The parallel-pump spin-wave instability threshold has been measured at 8.88 GHz in porous polycrystalline YIG at temperatures ranging from 88 K to 368 K. Sample porosities ranged from & lt;0.5% to 16.3%. The shapes of the low-temperature butterfly curves suggest that the previously inferred inverse wavenumber dependence of the spin-wave linewidth ΔHk may not be valid in porous YIG. The temperature dependences of the ΔHk are incongruous with those predicted by the various transit-time models of spin-wave relaxation. They are also markedly different from those reported for the off-resonance effective linewidth ΔHeff, which suggests that different mechanisms determine ΔHeff and ΔHk.
Type of Medium:
Online Resource
ISSN:
0021-8979
,
1089-7550
Language:
English
Publisher:
AIP Publishing
Publication Date:
1979
detail.hit.zdb_id:
220641-9
detail.hit.zdb_id:
3112-4
detail.hit.zdb_id:
1476463-5