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CHUF and `unfreezing' (or de-arrest) of kinetic arrest in magnetic shape memory alloys

2012/01/03 by P. Chaddah, A. Banerjee, Chaddah, P. +1
Biochemistry, Genetics and Molecular Biology · Earth and Planetary Sciences · Materials Science · Physics and Astronomy · #FOS: Physical sciences #Geomagnetism and Paleomagnetism Studies #High-pressure geophysics and materials #Magnetic and transport properties of perovskites and related materials #Materials Science (cond-mat.mtrl-sci) #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.mtrl-sci #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.1201.0575

Kinetic arrest, Magnetic glass and CHUF protocol, in magnetic shape memory alloys

arxiv created 2012/01/03 · openalex publication_date 2012/01/03 · arxiv updated 2012/01/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

CHUF (cooling and heating in unequal field) protocol allows establishing phase coexistence through macroscopic measurements and enables distinguishing the metastable and stable phases (amongst the coexisting phase fractions across a first order magnetic transition) of a glass-like arrested state (GLAS). The observation of kinetic arrest in magnetic shape memory alloys has become a very active area of research. We highlight recent CHUF measurements on these materials that show behaviour similar to that reported earlier in manganites and other intermetallic alloys, emphasizing the generality. The martensitic transition provides an opportunity to study various properties as the CHUF protocol enables tuning of phase fractions, and controlled devitrification, of GLAS.

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