Magnetic Domain Observation of Nd-Fe-B/Nd-Cu Thin Films Deposited on Si Substrate

被引：5
|
作者：
Shima, Toshiyuki [1 ,2 ]
Sato, Kohtaro [2 ]
Mishina, Yuriko [3 ]
Ohtsuki, Tomoyuki [1 ]
Iwama, Hiroki [3 ]
机构：
[1] Tohoku Gakuin Univ, Dept Elect Engn, Tagajo, Miyagi 9858537, Japan
[2] Tohoku Gakuin Univ, Res Inst Engn & Technol, Nano Mat Res Div, Tagajo, Miyagi 9858537, Japan
[3] Tohoku Gakuin Univ, Course Elect Engn, Grad Sch, Tagajo, Miyagi 9858537, Japan
来源：
JOURNAL OF THE JAPAN INSTITUTE OF METALS | 2012年 / 76卷 / 01期
关键词：
neodymium iron boron alloy; thin film; magnetic domain; PERMANENT-MAGNETS; MICROSTRUCTURE; ND2FE14B;
D O I：
10.2320/jinstmet.76.52
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
It is well known that Nd-Fe-B magnet shows high performance as permanent magnets. It has been applied for various products such as sensors, actuators, and the motors for hybrid and electric vehicles, because of its high magnetocrystalline anisotropy and high saturation magnetization. From environmental issues, further high performance permanent magnet is needed. However, the coercivity of Nd-Fe-B magnets has reached only about 20% of the theoretical values. In order to understand the magnetization process of Nd-Fe-B alloys, the control of the grain size and the grain boundary is of importance. In this work, Nd-Fe-B/Nd-Cu thin films and circular dot arrays with 2 mu m in diameter have been prepared by using ultra high vacuum sputtering system, electron beam lithography and Ar ion etching system and their magnetic properties have been investigated. Remarkable difference of the magnetization process between the Nd-Fe-B thin films with and without Nd-Cu additional layer was observed.
引用
收藏
页码：52 / 58
页数：7
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