Synthesis and magnetic properties of La 3+ -Co 2+ substituted strontium ferrite particles using modified spray pyrolysis–calcination method
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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 .
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnetic Properties and Synthesis of Ferrites · Multiferroics and related materials · Magneto-Optical Properties and Applications
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References (24)
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