A study of Nd-substituted Sr hexaferrite prepared by hydrothermal synthesis

• Published in: IEEE transactions on magnetics Vol. 38; no. 5; pp. 2928 - 2930
• Main Authors: Wang, J.F., Ponton, C.B., Harris, I.R.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: New York, NY IEEE 01.09.2002; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Calcination; Coercive force; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Iron; Magnetic properties; Magnetic properties and materials; Magnetism; Neodymium; Permanent magnets; Physics; Remanence; Saturation magnetization; Stability; Strontium; Studies of specific magnetic materials; Temperature distribution; Hexagonal ferrites; Neodymium compounds; Calcination; XRD; Experimental study; Hydrothermal treatment; Hydrothermal synthesis; Neodymium additions; Coercive force; Strontium compounds; Sr hexaferrite; Chemical synthesis; Nd substitution; Quaternary compounds; Magnetic properties
• ISSN: 0018-9464; 1941-0069
• DOI: 10.1109/TMAG.2002.803071

Nd-substituted Sr hexaferrite (Sr/sub 1-x/Nd/sub x/Fe/sub 12/O/sub 19/) plate-like particles were synthesized hydrothermally and then calcined at temperatures ranging from 1100/spl deg/C to 1250/spl deg/C for 2 h in air. The effects of the Nd-Sr ratio and the calcination temperature on the phase stability and magnetic properties were investigated. Nd substitution up to a Nd-Sr ratio of 1/8 increases the coercivity without causing any significant deterioration in either the saturation magnetization or the remanence.