In:
Journal of Applied Physics, AIP Publishing, Vol. 67, No. 9 ( 1990-05-01), p. 5430-5432
Abstract:
Using microwave ultrasonic interferometry we have studied the relaxation dynamics of an order-order transition in an Ising antiferromagnet. The system is prepared in one antiferromagnetic phase and relaxes to its thermodynamically inequivalent time-reversed conjugate, driven by an induced staggered field. The time-reversed phases induce equal and opposite changes in the velocity of transverse polarized ultrasonic waves and this is exploited by the interferometer to monitor the volume fractions of the conjugate phase during the relaxation process. The results indicate that the relaxation is dominated in the initial stages by domain growth of the stable phase as opposed to nucleation-dominated growth. This process can be closely fitted by a time-cubed growth law for the domains of stable phase. The final stages are well approximated by exponential behavior.
Type of Medium:
Online Resource
ISSN:
0021-8979
,
1089-7550
Language:
English
Publisher:
AIP Publishing
Publication Date:
1990
detail.hit.zdb_id:
220641-9
detail.hit.zdb_id:
3112-4
detail.hit.zdb_id:
1476463-5
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