跳到主要內容

臺灣博碩士論文加值系統

(44.201.99.222) 您好!臺灣時間:2022/12/05 23:00
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

我願授權國圖
: 
twitterline
研究生:鍾永基
研究生(外文):Yung-Chi Chung
論文名稱:鎳鋅鐵氧體混合硬磁釹鐵硼之磁性質量測
論文名稱(外文):Magnetic Properties of Ni-Zn Ferrites Mix NdFeB
指導教授:黃建華黃建華引用關係
指導教授(外文):Gain-Hwa Hwang
學位類別:碩士
校院名稱:國立高雄師範大學
系所名稱:物理學系
學門:自然科學學門
學類:物理學類
論文種類:學術論文
畢業學年度:95
語文別:中文
中文關鍵詞:鐵氧體
外文關鍵詞:Ferrite
相關次數:
  • 被引用被引用:0
  • 點閱點閱:226
  • 評分評分:
  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
本研究旨在探究在不同溫度下熱處理過之鎳鋅鐵氧體軟磁磁粉,再混合一定比例的釹鐵硼硬磁磁粉後,其軟硬磁之間的磁交互作用情形。樣品的製備上是採用燃燒合成法來製備奈米級的鎳鋅鐵氧磁體粉末,並搭配微米級釹鐵硼硬磁磁粉,讓軟硬磁粉末均勻混合,最後壓製成軟硬磁複合之塊材,並用震盪樣品磁性量測儀(VSM)經過ㄧ系列的量測其磁滯曲線的變化。
ㄧ般而言當軟硬磁混合後,其磁滯曲線會呈現蜂腰狀(wasp-waisted)結構,即磁滯曲線呈現中間部分(低外加磁場處)較狹窄而兩旁(高外加磁場處)較為寬胖,而實驗的量測也確實發現此類現象。比較軟硬磁混合材料的磁滯曲線以及理論的軟磁與硬磁的磁滯曲線疊加模型,也發現軟硬磁混合磁材在處於塊材狀態之下量測與處於粉末狀態之下量測其磁交互作用也有明顯的差異,其交互作用研判可能為靜磁交互作用與磁交換耦合,若將鎳鋅鐵氧體粉末進行真空封裝後加以熱處理,其磁性行為亦會產生大大的改變,而此方法置備出的樣品似乎可應用於須高飽和磁化強度與低損耗的磁材上。
The aim in this thesis is to study interaction of soft and hard magnetic materials each other. The blend of this magnetic materials were made of soft annealed ferrites powder mixed with hard magnetic powder. The soft magnetic nano-sized ferrites for the experiment are synthesized by combustion method, and then are mixed with micro-sized NdFeB. Finally, we press the blend to become a small tablet that we using to measure the hysteresis loop by Vibration Samples Measurements.
Generally speaking, when soft and hard magnetic powder mix with each other, the hysteresis loop of the mixture will be in wasp-waisted shape. The wasp-waisted loop is constricted in the middle section, but is wider above and below section. This phenomenon actually can be found in our experiment, too. Our work compare hysteresis loops of mixture sample with hysteresis loops of hard and soft magnetic materials by linear addition. We can found that magnetic interaction measured in the powder is different from that in the tablet. Maybe this discrepancy comes from static magnetic interaction and exchange-coupled by soft and hard magnetic particles. If the Ni-Zn ferrites are annealed in vacuum, the Ni-Zn ferrites will change its magnetism greatly. It seems that sample prepared by this method can be used in high saturation magnetization materials and low loss magnetic materials.
摘要
Abstract
目錄……………………………………………….………….…..…….Ⅰ

第一章 序論
1-1磁性物質的簡介…….…………………………………..………..1
1-2永久磁材的發展與製備簡介…………..……………...……..…..3
1-3鐵氧磁體的發展簡介……………………….………………..…..5
1-4燃燒合成法…………..…………………………...…………..…..7
1-5研究目的……………...…………………..…………………..…..8
第二章 基礎理論
2-1材料磁性的來源………………………………….…..…………..9
2-2磁性的分類……………...…………………….……..…………..11
I﹒鐵磁性材料…………………………....……………………11
II﹒順磁性材料……..………………...…….……………...….15
III﹒反鐵磁性材料…………………………………….…..….16
IV﹒反磁性材料……………………………………..….…..….17
V﹒陶鐵磁性料……………………………………….......…….18
2-3磁化曲線與磁滯曲線…………………………………..…...…...19
2-4交換耦合作用……………………………………………..…......23
2-5尖晶石的結晶結構……………………….…………….……......24

第三章 實驗步驟
3-1樣品製備………………………..………………………………..27
3-2 X光繞射分析…...……………..…….....………………………..32
3-3震盪樣品磁性量測儀VSM量測………………………..………..35

第四章 實驗結果與討論
4-1鎳鋅鐵氧磁體之磁性質………..………………………………..37
4-1-1 Ni-Zn Ferrite之X光繞射圖譜與粒徑分析…………...37
4-1-2 Ni-Zn Ferrite不同溫度熱處理之磁滯曲線……………42
4-1-3 Ni-Zn ferrite於真空狀態下熱處理之磁滯曲線…....…47
4-2軟硬磁混合樣品之磁性質…………………………………..51
4-2-1軟硬磁混合樣品之X光繞射圖譜………….…………...51
4-2-2軟硬磁混合樣品之磁滯曲線……………………….…...52
4-2-3建立軟硬磁混合樣品之模型……………………….…...57
4-2-4在不同溫度下軟硬磁混合樣品之磁滯曲線……….…...71
4-2-5軟硬磁混合樣品於真空下熱處理其磁滯曲線的變化....83
第五章 結論……..…..……………………………………….......…86
5-1鎳鋅鐵氧體軟磁的磁特性………………..……………………..86
5-2鎳鋅鐵氧體軟磁混合Nd2Fe14B的磁特性……….….……..…..87
參考文獻……..…..……………………………………….............…...88
[1] 金重勳,"磁性技術手冊",中華民國磁性技術協會,2002年
[2] C. Kittel”Introduction to Solid States Physics, 7th”,
JOHN WILEY & SON,INC (1996).
[3] Buschow K.H.J., de Boer F.R. ”Physics of Magnetism and Magnetic Materials” , Kluwer Academic Publishers(2004)
[4] Robert C. O’Handley”Modern Magnetic Materials-Principles and Application”, JOHN WILEY & SON,INC (1999).
[5] Shi-Shen Yan…etc”Soft/hard exchange-coupled layered structures with modulatedexchange coupling” , J. Appl. Phys. 94, 7 (2003)
[6] C. P. Bean, ”Hysteresis Loops of Mixtures of Ferromagnetic Micropowders”, J. Appl. Phys. 26, 1381 (1955)
[7] V. M. Chakka, Z. S. Shan, and J. P. Liu, ”Effects of coupling strength on magnetic properties of exchange spring magnets”, J. Appl. Phys. 94, 6673 (2003).
[8] P.W.Anderson…etc”Antiferromagnetism.Theory of Superexchange Interaction” Physical Review.94, 2(1950)
[9] C Caizer and M Stefanescu”Magnetic characterization of nanocrystalline Ni–Zn ferrite powder prepared by the glyoxylate precursor method” , J. Phys. D: Appl. Phys. 35 (2002)
[10] L. H. Bennet, and E. D. Torre, ”Analysis of wasp-waist hysteresis loops”, J. Appl. Phys. 97, 10E502 (2005).
[11] R. Swaminathan,M. E. McHenry, P. Podder, and H. Srikanth,
”Magnetic properties of polydisperse and monodisperse NiZn ferrite
88
nanoparticles interpreted in surface structure model”, J. Appl. Phys. 97, 10G104 (2005).
[12] A. Moser, A. Berger, D. T. Margulies, and E. E. Fullerton, ”Biquadratic coupling in antiferromagnetically coupled magnetic recording media”, J. Appl. Phys. 95, 6657 (2004).
[13] C. Upadhyay, H. C. Verma, and S. Anand, ”Cation distribution in nanosized Ni-Zn ferrites”, J. Appl. Phys. 95, 5746 (2004).
[14] E. Wajnberg, G. Cernicchiaro, and Daric Motta de Souza Esquivel, ”Antennae: the strongest magnetic part of the migratory ant”, BioMetals. 17, 467 (2004).
[15] L. Y. Zhu, M. Itakura, Y. Tomokiyo, N. Kuwano, and K. Machida, ”Corroded microstructure of HDDR-NdFeB magnetic powders”, J. Magn. Magn. Mat. 279, 353 (2004).
[16] D. Bueno-Baques, E. P. Hernandez, J. Matutes-Aquino, S. M. Rezende, and D. R. Cornejo, ”Study of magnetization reversal in hybrid magnets”, J. Alloys and Compounds. 369, 158 (2004).
[17] R. Pugh, G. J. Tomka, R. Ireland, and O. Thomas, ”Interactions in bonded soft magnetic particle multilayers”, J. Magn. Magn. Mat. 272 (2004).
[18] V. M. Chakka, Z. S. Shan, and J. P. Liu, ”Effects of coupling strength on magnetic properties of exchange spring magnets”, J. Appl. Phys. 94, 6673 (2003).
[19] S. S. Yan, M. Elkawin, D. S. Li, H. Garmestani, J. P. Liu, J. L. Weston, and G. Zangari, ”Soft/hard exchange-coupled layered structures with modulated exchange coupling”, J. Appl. Phys. 94, 4535 (2003).
[20] G. J. Bowden, J. M. L. Beaujour, A. A. Zhukov, B. D. Rainford, 89
P. A. J. de Groot, R. C. C. Ward, and M. R. Wells, ”Modeling the magnetic properties of DyFe2/YFe2 superlattices”, J. Appl. Phys. 93, 6480 (2003).
[21] Jing Li, Zhong Lin Wang, Hao Zeng, Shouheng Sun, and J. Ping Liu, ”Interface structure in FePt/Fe3Pt hard-soft exchange-coupled magnetic nanocomposites”, Appl. Phys. Lett. 82, 3743 (2003).
[22] Amarendra K. Singh, T. C. Goel, and R. G. Mendiratta, ”Magnetic properties of Mn-Substituted Ni-Zn ferrites”, J. Appl. Phys. 92, 3872 (2002).
[23] S. T. Chui, and Y. L. Ma, ”Temperature dependence of the domain wall depinning in magnetic hard-soft composites”, J. Appl. Phys. 91, 9315 (2002).
[24] Y. Wu, K. Li, J. Qiu, Z. Guo, and G. Han, ”Antiferromagnetically coupled hard/Ru/soft layers and their applications in spin valves”, Appl. Phys. Lett. 80, 4413 (2002).
[25] D. T. Margulies, M. E. Schabes, W. McChesney, and
E. E. Fullerton, ”Interlayer coupling and magnetic reversal of antiferromagnetically coupled media”, Appl. Phys. Lett. 80, 91 (2002).
[26] B. Slusarek, and I. Dudzikowski, ”Application of permanent magnets made from NdFeB powder and from mixtures of powders in DC motors”, J. Magn. Magn. Mat. 239, 597 (2002).
[27] Q. Huang, J. Li, X. J. Huang, C. K. Ong, and X. S. Gao, ”Effect of magnetic coupling on the magnetoresistive properties in La0.67Sr0.33MnO3/BaFe11.3(ZnSn)0.7O19 composites”, J. Appl. Phys. 90,
90
2924 (2001).
[28]S. S. Yan, J. Du, J. L. Weston. G. Zangari, and J.A.Barnard,”Modulated magnetic properties of hard/soft exchange-coupled SmFe/NiFe multilayers”, J. Magn. Magn. Mat. 231, 241 (2001).
[29] K. Y. Wang, C. Frommen, Paul J. Schilling, N. Moelders, and
J. Tang, ”Evolution of magnetic phases upon annealing in glass-coated Fe-Ni-Cu microwires”, J. Magn. Magn. Mat. 226-230, 1970 (2001).
[30] Z. Li, and S. Zheng, ”Magnetization reversal of ferromagnetic/antiferromagnetic bilayers”, Appl. Phys. Lett. 77, 423 (2000).
[31]J. M. Gonzalez, M. I. Montero, P. Crespo, P. Marin, and A. Hernando, ”Hystereris and relaxation of hard-soft nanocomposite samples”, J. Appl. Phys. 87, 4759 (2000).
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top
無相關論文