2016/05/28 by Rukshan Thantirige, Thantirige, Rukshan M., Nihar Pradhan +3
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic Properties of Alloys #Magnetic and transport properties of perovskites and related materials #Materials Science (cond-mat.mtrl-sci) #Rare-earth and actinide compounds
paper · pdf · doi:10.48550/arxiv.1605.08849
openalex publication_date 2016/05/28 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Here, we investigated the influence of grain formation on the magnetization\nreversal of SmCo5/Co at low temperature. A set of SmCo5/Co bi-layer samples\nwere fabricated under identical conditions on MgO(100) and glass substrates\nwith a Cr underlayer. Analysis of each magnetic layer by an Atomic Force\nMicroscope (AFM) reveals that MgO(100) results small and uniform grain\nformation of 23 nm in contrast to 57 nm on glass, and x-ray diffraction studies\nshow that the sample on MgO(100) has high crystallinity with SmCo5(11 0) phase.\nAt room temperature, both samples exhibit good hard magnetic properties with\ncoercivity (HC) of 13.2 kOe and 12.5 kOe, and energy products (BH)max of 14.5\nMGOe and 5.3 MGOe for samples on MgO(100) and glass, respectively. Low\ntemperature hysteresis measurements show an exchange decoupling at low\ntemperatures for the sample on glass, and this is due to the formation of large\ngrains on glass that reduces the effective inter-grain exchange coupling\nbetween phases.\n