발간논문

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Vol.25, No.9, 636 ~ 642, 1987
Title
Variation of Magnetic Properties with Temperature and Co Composition in Nd - Fe - Co - B - Zr Permanent Magnets
강일구Il Koo Kang, 김광윤Kwang Youn Kim, 정원용Won Young Jeung, 오재현Jae Hyun Oh
Abstract
The magnetic properties of Nd_(15)(Fe_(1-x) Co_x)_(76)B_8Zry systems at low and high temperatures were investigated. When the composition of Co was 7.6 at%, 9.9 at% and 12.9 at% in Nd_(15)(Fe_(1-x) Co_x)_(76)B_8Zry, the decrease of saturation magnetization at low temperature was due to spin reorientation near -150℃. But the result like this did not appear at the composition of 15.2 at% Co. The remanent induction has minimum value at the composition of 12.9 at% Co, but the intrinsic coercivity has maximum value at 15.2 at% Co in Nd_(15)(Fe_(1-x) Co_x)_(76)B_8Zry systems. A temperature coefficient is low when the composition is 15.2 at% Co.
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