Mn 2 O 3 가 LiNiBi Ferrite의 물리적 특성에 미치는 영향

고재귀; Jae Gui Koh

Korean Journal of Materials Research, Vol.14, No.9, 655-658, September, 2004

DOI10.3740/MRSK.2004.14.9.655 Export Citation

Mn 2 O 3 가 LiNiBi Ferrite의 물리적 특성에 미치는 영향

Physical Properties of Polycrystalline Mn 2 O 3 -Substituted LiNiBi Ferrite

고재귀^†

숭실대학교 자연과학대학 물리학과

Jae Gui Koh^†

Department of Physics, Soongsil University, 1-1 Sabgdi 5-Dong, Dongjak-Gu, Seoul 157-743, Korea

E-mail:

Lithium ferrites are a low-cost material which have been prominent in the high frequency core industry because of their excellent temperature performance and high squareness ratio. In order to develope the lithium ferrites with the high squareness and low coercive force, the ferrites of Li 0.48 Bi 0.02 Ni 0.04 Fe 2.46?x O 4 were investigated the by varying composition, temperature and frequency. Electric loss of the Li-ferrite was lowered with the substitution of Mn 2 O 3 . The addition of Mn 2 O 3 increased the magnetic induction (Bm&Br) but decreased the coercive force (Hc) and the squareness ratio (R=Br/Bm). Also, the Br value was stable at environmental temperature variation.

Keywords:squareness ratio;magnetic induction;coercive force;loss factor

[References]

Koh JG, Song JM, Basic and Application of Magnetic Physics, p.125, Soongsil Univ. Press, Seoul, (2001) (2001)
Hahn HT, J. Appl., 69, 6192 (1991)
Song JM, Koh JG, New Physics, 33, 277 (1993)
Kuroda T, Saita H, Sato N, Nomura T, Proc. 8th. Int. Conf. Ferrite, p.506, Kyoto and Tokyo, Japan (2000) (2000)
Kobayashi O, Yamada O, Ito K, Tomita M, Proc. 8th. Int. Conf. Ferrite, p.515, Kyoto and Tokyo, Japan (2000) (2000)
Kim JG, Han KH, Lee CH, Jeong JY, JKPS, 38(6), 799 (2001)
Koh JG, Application of Magnetic Physics, p.81, Soongsil Univ. Press, Seoul, (1992) (1992)
Reddy P, J. Appl. Phys., 63, 3783 (1988)
So SJ, Park CB, JKPS, 38(4), 417 (2001)
Ridgly DH, Lessoff H, Childress JD, J. Amer. Ceram. Soc., 53, 304 (1970)
Song JM, Koh JG, New Physics, 34, 1 (1994)
Kim HC, Koh JG, J. Kor. Mag. Soc., 13(3), 121 (2003)
Dawson WM, Proc. 8th. Int. Conf. Ferrite, p.512, Kyoto and Tokyo, Japan (2000) (2000)
Drofenik M, Znidarsic A, Makovec D, Proc. 8th. Int. Conf. Ferrite, p.530, Kyoto and Tokyo, Japan (2000) (2000)
Koh JG, Song JM, Basic and Application of Magnetic Physics, p.51, Soongsil Univ. Press, Seoul, (2001) (2001)
Koh JG, JKPS, 44(6), 1504 (2004)
Koh JG, J. Kor. Mag. Soc., 9(5), 234 (1999)

[1] Koh JG, Song JM, Basic and Application of Magnetic Physics, p.125, Soongsil Univ. Press, Seoul, (2001) (2001)

[2] Hahn HT, J. Appl., 69, 6192 (1991)

[3] Song JM, Koh JG, New Physics, 33, 277 (1993)

[4] Kuroda T, Saita H, Sato N, Nomura T, Proc. 8th. Int. Conf. Ferrite, p.506, Kyoto and Tokyo, Japan (2000) (2000)

[5] Kobayashi O, Yamada O, Ito K, Tomita M, Proc. 8th. Int. Conf. Ferrite, p.515, Kyoto and Tokyo, Japan (2000) (2000)

[6] Kim JG, Han KH, Lee CH, Jeong JY, JKPS, 38(6), 799 (2001)

[7] Koh JG, Application of Magnetic Physics, p.81, Soongsil Univ. Press, Seoul, (1992) (1992)

[8] Reddy P, J. Appl. Phys., 63, 3783 (1988)

[9] So SJ, Park CB, JKPS, 38(4), 417 (2001)

[10] Ridgly DH, Lessoff H, Childress JD, J. Amer. Ceram. Soc., 53, 304 (1970)

[11] Song JM, Koh JG, New Physics, 34, 1 (1994)

[12] Kim HC, Koh JG, J. Kor. Mag. Soc., 13(3), 121 (2003)

[13] Dawson WM, Proc. 8th. Int. Conf. Ferrite, p.512, Kyoto and Tokyo, Japan (2000) (2000)

[14] Drofenik M, Znidarsic A, Makovec D, Proc. 8th. Int. Conf. Ferrite, p.530, Kyoto and Tokyo, Japan (2000) (2000)

[15] Koh JG, Song JM, Basic and Application of Magnetic Physics, p.51, Soongsil Univ. Press, Seoul, (2001) (2001)

[16] Koh JG, JKPS, 44(6), 1504 (2004)

[17] Koh JG, J. Kor. Mag. Soc., 9(5), 234 (1999)