Thermal expansion and ultrasonic attenuation anomalies in antiferromagnetic dysprosium and terbium-50% holmium

Observation of Spin Locking in Dysprosium through a Nonlinear AC Magnetic Response

“…The spin locking temperatures for Dy, confirmed experimentally, are listed in Table I. 5,6) The dynamical magnetic phenomenon due to this spin locking in the present experiment is explained through the process of domain growth, in which Bloch walls, separating C and IC domains, move and merge. 7) Physically, the ''spin locking'' phenomenon is also understood as the detection of the Rayleigh loop due to the irreversible displacement of the domain wall (DW).…”

“…2) There, the easy-plane-type magnetic anisotropy leads to instabilities in the helical magnetic structure, resulting in the coexistence of the incommensurate (IC) and commensurate (C) states. Ho was the first element used in experiments that demonstrated this phenomenon; 3) thereafter, a similar phenomenon was confirmed in Tb-50%Ho 4,5) and Dy 5,6) via thermal expansion and elastic constant measurements. The spin locking temperatures for Dy, confirmed experimentally, are listed in Table I.…”

“…Previously, #3 was observed via thermal expansion and ultrasound attenuation using intervals of 5 K by Greenough and co-workers. 5,6) This meaningful changes in M 3! =h and could not be detected in a single (N ¼ 1) measurement, and those estimated values for N ¼ 1 were often out of the normal distribution for the fifty samples.…”