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Zn 및 La - Zn 치환에 따른 Sr 페라이트의 자기적 특성에 관한 연구
장세동(S. D. Jang),김종오(C. O. Kim),김종희(J. H. Kim) 한국자기학회 2001 韓國磁氣學會誌 Vol.11 No.6
These experiments were carried out to examine the effects of element substitution of Zn and La-Zn for Sr-ferrite. The calcined properties of Zn and La-Zn element substitution were examined, and also the sintered magnetic properties were compared with the stoichiometric condition. The magnetization properties of calcined SrM materials is as follows; Ms: 61.06 emu/g. Also, the magnetization properties of calcined Zn_(0.3)-SrM materials is as follows; Ms : 66.90 emu/g. The sintered magnetic properties of (La-Zn)_(0.3)-SrM composition is as follows; Br: 4.21 kG, BHmax : 4.19 MGOe.
Mn 및 La - Mn 치환 Sr 페라이트의 자기적 특성 변화
장세동(S. D. Jang),김종오(C. O. Kim),김종희(J.H. Kim) 한국자기학회 2001 韓國磁氣學會誌 Vol.11 No.6
These experiments were carried out to examine the effects of elemental substitution of Mn and La-Mn on Sr-ferrite. The calcined properties for the Mn and La-Mn substitution were examined, and the sintered magnetic properties were compared with the stoichiometric condition. The magnetic properties of calcined SrM and (La-Mn)_(O.3)-SrM composition were as follows, respectively; Ms : 61.06 emu/g, iHc: 4.45 kOe and Ms : 61.16 emu/g, iHc: 4.46 kOe. Also, the sintered ferrite magnets of Mn_(0.3)-SrM and [(La-Mn)_(0.3)-SrM exhibited a similar properties to the stoichiometric composition but the coercivity of (La-Mn)_x-SrM was decreased rapidly with x=0.5.