Tae-Yeon Hwang, Jimin Lee, Hyo-Ryoung Lim
Mar 1, 2017
Citations
0
Influential Citations
18
Citations
Journal
Ceramics International
Abstract
Abstract The purpose of the research was to improve the intrinsic magnetic properties of strontium ferrite by substituting lanthanum and cobalt for strontium and iron. The salt-assisted ultrasonic spray pyrolysis (SA-USP) following calcination process were used to from La-Co substituted strontium ferrite particles (La x Sr 1- x Fe 12 -y Co y O 19 ), and their compositional dependent magnetic properties systemically investigated. All the samples were calcined at 1050 °C for 1 h in an air atmosphere to yield single-phased hexagonal particles several hundred nanometers to microns in size. A saturation magnetization of 70.76 emu/g and a coercivity 7265 Oe were obtained at a composition of La 0.25 Sr 0.75 Fe 11.75 Co 0.25 O 19 . The amount of Co was reduced to obtain an optimized saturation magnetization of 71.40 emu/g and a coercivity of 7572 Oe at a composition of La 0.25 Sr 0.75 Fe 11.8 Co 0.2 O 19 .