Journal
JOURNAL OF PHYSICS-CONDENSED MATTER
Volume 20, Issue 46, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0953-8984/20/46/465212
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Funding
- EPSRC [EP/E016243/1]
- Leverhulme Trust
- US Department of Energy, Office of Basic Energy Sciences, Materials Sciences Division [DE-AC02-07CH11358]
- Engineering and Physical Sciences Research Council [EP/E016243/1] Funding Source: researchfish
- EPSRC [EP/E016243/1] Funding Source: UKRI
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We present spatially localized magnetic relaxation measurements of the first-order magnetostructural transition in Gd(5)Ge(4) using a scanning Hall probe imaging technique. Relaxation measurements were performed at 6, 10 and 35 K to probe the field-increasing antiferromagnetic (AFM) to ferromagnetic (FM) transition and, when it can occur, the field-decreasing FM to AFM transition. We demonstrate that localized regions relax with time towards the ground state for a given field and temperature and observe different magnetic behaviours at the three measurement temperatures. In particular, the observed magnetic relaxation at 6 K is consistent with the idea of an arrested state at this temperature. Our scanning Hall probe imaging data give an insight into the phase nucleation and growth process of the martensitic-like magnetostructural first-order transition in Gd5Ge4.
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