Thermo-Remanent Magnetization (TRM) Explorations near the Critical Spin Glass Temperature
ORAL
Abstract
We have performed extensive TRM measurements from .8Tg to .97Tg, in a single crystal CuMn(6%) sample, over a wide range of waiting times (300 s to 100,000 s) and magnetic fields (3G-96G). We find a collapse of both the remanent magnetization, and the effective waiting time, as Tg is approached. This collapse suggests that we are observing the effects of critical fluctuations associated with the spin glass phase transition, and we probe several different scenarios to explain the data.
*This work wassupported by the U.S. Department of Energy, Office ofScience, Basic Energy Sciences, under Award No. DESC0013599.The IUP Dual DC SQUID magnetometer wasbuilt under an NSF MRI, Award No. 0852643.
–
Presenters
-
Gregory G Kenning
- Indiana University of Pennsylvania