2019/02/19 by Malvika Tripathi, Tripathi, M.
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic Properties and Applications #Magnetic and transport properties of perovskites and related materials #Magnetic properties of thin films #Materials Science (cond-mat.mtrl-sci)
paper · pdf · doi:10.48550/arxiv.1902.06911
openalex publication_date 2019/02/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Here, we describe the prototype for precisely scaled temperature assisted magnetic recording scheme utilizing the characteristics of thermo-remnant magnetization (TRM) in bulk SmCrO3 as a memory media. The TRM response can be exploited in completely reversible bipolar switching performances either by tuning the temperature only across a sharp thermal window ΔTw = 10 K, or annealing isothermally with a single pulse of field ≥ 0.1 T by flipping the direction of magnetization from 0o to 180o. The microscopic mechanism of TRM in SmCrO3 is explored by means of diffuse scattering using high energy λ= 0.4997Å neutrons and thermal variation of coercivity in TN ± ΔT range. It is noticed that the huge heterogeneity reflected by the estimated average spin-spin correlation length of the fluctuations in microscopic spin configuration being ≤ 90 Å and efficient domain wall pinning effect as the defect dimensions are approximately twice to the domain wall width, governs the peculiar characteristic of TRM in SmCrO3.