研究生: |
辛萊杰 Rajat Kumar Singh |
---|---|
論文名稱: |
以第一原理計算研究Dy摻雜之Nd2Fe14B的磁性質 Study of magnetic properties of Dy doped Nd2Fe14B by First-principles calculations |
指導教授: |
許文東
Hsu, Wen-Dung |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 材料科學及工程學系 Department of Materials Science and Engineering |
論文出版年: | 2023 |
畢業學年度: | 111 |
語文別: | 英文 |
論文頁數: | 101 |
外文關鍵詞: | Magnetic anisotropy Energy, Curie temperature, First principal calculation |
相關次數: | 點閱:82 下載:23 |
分享至: |
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Strong magnets are required not just for technological advancement but also for energy conservation. Nd-Fe-B magnets are the strongest permanent magnets, with a high maximum energy product, and are widely employed in a variety of applications, including high-performance computers, and hybrid automobiles, However, low coercivity and operating temperature, are the two drawbacks of Nd2Fe14B.magnets. In This work, we focus on increasing the magnetic anisotropy energy and operating temperature of Nd2Fe14B by substituting the Nd (Neodymium) with the rare earth element Dy (Dysprosium). The five models have been considered when (Dy = 0, 0.50, 1, 1.50, 2) and see the effect change in magnetic anisotropy energy and the curie temperature. In this work First principal calculation is used for the magnetic anisotropy energy as well as for the curie temperature. The results of this, are magnetic anisotropy energy maximum for model Nd0.50Dy1.50Fe14B and least for model Nd2Fe14B. The curie temperature of model Nd1.50Dy0.50Fe14}B was the maximum and the Nd2Fe14B model was the least.
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