Magnetization Of Sm-Fe-N Thin Films With In-Plane Anisotropy
نویسندگان
چکیده
Am-Fe-N films have been made by dc magnetron sputtering and heating in-situ in nitrogen atmosphere. It is observed that the anisotropy changes from perpendicular to in-plane by nitrogenation. The Curie temperature is about 380 K. Aspects of structure, hysterisis loops, initial magnetization curves and temperature dependence of coercivity are discussed. SQUID magnetometer was used to measure the magnetic properties from 5 K to 400 K, with a maximum field of 55 kOe. An alternating gradient force magnetometer (AGFM) was used to measure the initial and remanence magnetization and minor loops at room temperature with a maximum field of 14 kOe. Elemental compositions of Sm and Fe were measured by using a Kevex 770 x-ray florescence (XRF) analyzer and EDX from the SEM.
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