A Study on the High Frequency Properties of Mn-Zn ferrite with Re2O3(R=Dy, Gd, Ho) Addition

Re2O3(R=Dy, Gd, Ho)첨가에 따른 Mn-Zn ferrite의 고주파 특성에 관한 연구

  • 최우성 (원광대학교 전기전자 및 정보공학부)
  • Published : 2003.06.01


We studied effects by Re$_2$O$_3$(R=Dy, Gd, Ho) addition on the properties of Mn-Zn ferrite. The doping concentration range from 0.05 wt% to 0.25 wt%. All samples were prepared by standard fabrication of ceramics. With increasing the rare earth oxides, specific density and initial permeability increased on the whole. But, the tendencies such as upper result had the measured value on limitation and characteristics saturated or decreased properties after that. In case of excessive addition of additive beyond some level, initial permeability properties of ferrite have gone down in spite of anomalous grain. With increasing the content of additive, both the real and imaginary component of complex permeability and the magnetic loss (tan$\delta$) increased. Because the increased rate of real component had higher than imaginary component, magnetic loss increased none the less for increasing the real component related with magnetic permeability. But, the magnetic loss of ferrite doped with the rare earth oxides was lower than that of Mn-Zn ferrite at any rate. The small amount of present rare earth oxides in Mn-Zn ferrite composition led to enhancement of resistivity in bulk, and more so in the grain boundary. It was seem to be due to the formation of mutual reaction such as between iron ions and rare earth element ions.


  1. Phys. Stat. Sol. v.151 no.205 Mossbauer, infrared, and x-ray studies of the Mn-Zn ferrites M.A.Amer
  2. 한국요업학회 v.36 no.3 열처리 조건에 따른 (Mn,Zn)-ferrite의 전자기적 특성에 관한 연구 김정식
  3. J.J.S of Powder and Powder Metallurgy v.45 no.1 High frequency characteristics of crystal oriented Mn-Zn ferrite N.Hiratsuka;K.Kakizaki;H.Kobayashi
  4. Soft Ferrites Properties and Application E.C.Snelling
  5. J. mater. Res. v.14 no.3 Grain boundary impedance of doped Mn-Zn ferrites D.Arcos;M.Vazquez;R.Valenzuela;M.Vallet-Regl
  6. 전기전자재료학회논문지 v.3 no.3 저손실 Mn-Zn-Fe 페라이트의 제조에 관한 연구 문현욱;서강수;최희태;신용진
  7. 한국재료학회 v.5 no.8 $Nb_{2}O_{5}$ 첨가가 Mn-Zn ferrite의 전자기적 특성에 미치는 효과 서정주;신명승;한영호
  8. Jpn. J. Phy. Soc. v.67 no.12 Magnetic properties of $ReMe_{0.5}Mn_{0.5}O_{3}$ (Re=rare earth element, Me=Ni,Cu) K.Asai;K.Fujiyoshi;N.Nishimori;Y.Satoh;Y.Kobayashi;M.Mizoguchi
  9. Phys. Stat. Sol. v.162 no.673 The influence of $R_{2}O_{3} (R=Yb, Er, Dy, Tb, Gd, Sm and Ce) on the electric and mechanical properties of a nickel zinc ferrite E.Rezleser;N.Rezlescu;P.D.Popa;L.Rezlescu;C.Pasnicu<673::AID-PSSA673>3.0.CO;2-A
  10. 전기전자재료학회논문지 v.13 no.10 희토류(Gd,Er)첨가가 Ba 페라이트의 투자율에 미치는 영향 정승우;김태원;최우성
  11. 전기전자재료학회논문지 v.13 no.4 NCZF의 특성에 미치는 B-Bi-Zn의 영향 정승우;김태원;전석택;김성수;최우성
  12. 전기전자재료학회논문지 v.15 no.2 $Re_{2}O_{3}$ (R=Dy, Er)가 Mn-Zn ferrite의 전자기적 특성에 미치는 영향 백승철;최우성
  13. 한국요업학회 v.28 no.7 페라이트 복합형 전파흡수체의 거동 김경용;김황섭;강선모;정형진