臺灣博碩士論文加值系統

我們使用分子束磊晶(MBE)成長晶向為fcc(111)的Ni80Fe20/ Ir/ Ni80Fe20三層膜系統來研究其界面之交換耦合行為。我們觀測到在Ni80Fe20/ Ir(tIr Å)/ Ni80Fe20三層膜(tIr = 5~40)產生異常的振盪交換耦合現象，其反鐵磁耦合的極值發生在Ir厚度為7、19、28、40 Å處，而最大的反鐵磁耦合強度在Ir厚度7 Å時為2.32 erg/cm2，但我們發現到其振盪耦合週期長度並不一致，可能與Ir(111)複雜的費米面之延展向量所造成長短週期疊加的結果。

The molecular beam epitaxy (MBE) growth fcc(111) oriented Ni80Fe20/Ir/ Ni80Fe20 trilayers were prepared to study the interlayer exchange coupling. We found that Ni80Fe20/Ir (tIr Å)/ Ni80Fe20 (tIr = 5~40) sandwich exhibit anomalous oscillatory exchange coupling strength. The antiferromagnetic (AF) peaks appear at tIr =7, 19, 28, 40 Å, and the maxima AF coupling strength is about 2.32 erg/cm2 with tIr =7 Å, however, the oscillation period is not the same, may course by the superposition of the spanning vector of the complicated Ir(111) Fermi surface.

第一章 簡介
§ 1-1前言1
§ 1-2交換耦合效應與RKKY理論3
§ 1-3近代相關文獻研究11
§ 1-4 Co/Ir多層膜之交換耦合研究14
§ 1-4-1 Study of Epitaxial Co/Ir(001) Superlattices16
§ 1-4-2 Study of Sputtering Co/Ir(110) multilayers17
§ 1-4-3 Study of Epitaxial Co/Ir(111) Superlattice18
§ 1-5 Review Articles19
【Reference】23
第二章 磁學理論簡介
§ 2-1磁性的來源24
§ 2-2磁異向性介紹26
§ 2-2-1磁晶異向性27
§ 2-2-2形狀異向性31
§ 2-2-3應力磁異向性35
§ 2-2-4交換磁異向性41
§ 2-3磁異向性的量測43
§ 2-4磁阻的簡介48
§ 2-5 GMR效應50
【Reference】56
第三章 實驗儀器介紹與實驗步驟
§ 3-1分子束磊晶系統57
§ 3-2實驗量測儀器63
§ 3-2-1 X-ray繞射儀63
§ 3-2-2磁光Kerr效應儀64
§ 3-2-3反射式高能電子繞射儀71
§ 3-2-4震動式磁力計73
§ 3-3實驗步驟74
§ 3-3-1系統真空環境的準備74
§ 3-3-2基板的準備75
§ 3-3-3樣品成長76
【Reference】77
第四章 實驗結果和討論
§ 4-0 Preparation of the Experiment78
§ 4-1 [Ni80Fe20/Ir(tIr Å)/Ni80Fe20]三層膜在Al2O3(11-20)基板之成長結構與機制81
§ 4-1-1 Study of the Surface Structure by RHEED Pattern82
§ 4-1-2 Study of the Bulk Structure by X-ray Diffraction84
§ 4-1-3 Study of the Bulk Structure by Synchrotron Radiation91
§ 4-2 改變Ir厚度對於[Ni80Fe20/Ir(tIrÅ)/Ni80Fe20]三層膜反鐵磁耦合之影響96
§ 4-3 變化Ir成長溫度對於[Ni80Fe20/Ir(tIr Å)/Ni80Fe20]三層膜反鐵磁耦合之影響105
§ 4-3-1 Growth on Al2O3(11-20) substrate107
§ 4-3-2 Growth on Al2O3(1-102) substrate112
【Reference】116
第五章 結論117

[1.1]M. N. Baibich et al., Phys. Rev. Lett. 61, 2472 (1988)
[1.2]S. S. P. Parkin, Phys. Rev. Lett. 67, 3598 (1991)
[1.3]David Jiles, Introduction to Magnetism and Magnetic Materials, p278 (1991)
[1.4]M. D. Stiles, Phys. Rev. B. 48, 7238 (1993)
[1.5]K. B. Hathaway, Magnetic Coupling and Magnetoresistance. 45
[1.6]P. Bruno and C. Chappert, Phys. Rev. Lett. 67, 1602 (1991)
[1.7]S. Colis et al., Phys. Rev. B. 62, 11709 (2000)
[1.8]K. Pettit et al., Phys. Rev. B. 56, 7918 (1997)
[1.9]Fujiwara, IEEE Trans. Mage. 31, 4112 (1995)
[1.10]S. S. P. Parkin et al., Phys. Rev. Lett. 64, 2304 (1990)
[1.11]H. Yanagihara et al., Phys. Rev. B. 60, 12957 (1999)
[1.12]H. Yanagihara et al., J. Appl. Phys. 81 (8) 15, 5197 (1997)
[1.13]H. Itoh et al., J. Magn. Magn. Mater. 257, 184 (2003)
[1.14]Y. Luo et al., Europhys. Lett. 42 (5), 565 (1998)
[2.1]Sóshin Chikazumi等著，張煦、李學養譯，磁性物理學，頁52，經連出版社(1981)
[2.2]Cullity, Introduction to magnetic materials, p207 (1972)
[2.3]Soshin Chikazumi and Stanley H. Charap, Physics of Magnetism (1972)
[2.4]Maxwell, James Clerk, Atreatise on Electicity and Magnetism, Articles 437 and 438, Vol.2, 1006 (1954)
[2.5]Stoner, Phil. Mag. 7, 36, 803 (1945)
[2.6]E .H. Meiklejohn and C. P. Bean, Phys.Rev. 102, 1413 (1956)
[2.7]E .H. Meiklejohn and C. P. Bean, Phys.Rev. 105 , 904(1957)
[3.1]See e.g.”Molecular Beam Epitaxy”，ed. by M . A. Herman and H. Sitter，(Berlin Springer，1989)
[3.2]C. C. Yu, “Studies of Crystal- and Step-Induced Magnetic Anisotropy and Exchange Coupling Effects in Epitaxial Films”, 國立成功大學物理研究所博士論文 (2000)
[3.3]J.P.Qian and G.C.Wang，J. Vac. Sci. Technol. A. 8, 4117 (1990)
[3.4]Voigt.W，”Magneto and Electro Optic”，Teubner，Leiptig (1908)
[3.5]Hulme，H.R.”Farady effect in ferromagnetics”，Pro.Roy.Soc.，A135，(1932) 237
[3.6]M.J,Freiser，IEEE.Trans.On Magn.，MAG-4(2)，(1968) 152
[3.7]P.K. Larsen and P.J. Dobson, “Reflection High-Energy Electron Diffraction and Reflection Electron Imaging of Surface”, (NATO ASI Series, Series B: Physics Vol.188)
[4.1]from “PCPDFWIN® data base v. 2.02”
[4.2]汪建民主編，材料分析，中國材料學會(1998)，頁613
[4.3]M. N. Baibich et al., Phys. Rev. Lett. 61, 2472 (1988)
[4.4]S. S. P. Parkin, Phys. Rev. Lett. 67, 3598 (1991)
[4.5]David Jiles, Introduction to Magnetism and Magnetic Materials, p278 (1991)
[4.6]陳文娟，Ni80Fe20/Ru/Ni80Fe20三層膜磁耦合隨著Ru厚度變化之研究，成功大學物理系碩士論文(2002)
[4.7]I. G. Trindade, J. Magn. Magn. Mater. 240 (2002) 232-234
[4.8]H. Yanagihara et. al., Phys. Rev. B. 60, 12957 (1999)
[4.9]M. D. Stiles, Phys. Rev. B. 48, 7238 (1993)
[4.10]from “http://www.phys.ufl.edu/fermisurface/index.html”
[4.11]P. Bruno and C. Chappert, Phys. Rev. Lett. 67, 1602 (1991)