蔡 志 申

研究室：理學院大樓 A206 室

研究室電話： (02) 29346620 轉 155

實驗室：理學院大樓 A105 室

實驗室電話： (02) 29346620 轉 168

電子郵件： jstsay@phy.ntnu.edu.tw

實驗室網頁：奈米磁學實驗室

經歷:

國立臺灣師範大學物理研究所博士

中央研究院物理所博士後研究 (1997-1999)

德國波昂大學宏博訪問學人 (1999-2000)

東海大學物理系助理教授 (2000-2004)

中正大學物理系副教授 (2004-2005)

獲獎

1997 年獲中華民國物理學會壁報論文獎

1998 年獲中華民國物理學會研究生優良論文獎

1999 年獲德國洪博 (Alexander von Humboldt) 獎助赴德國波昂大學訪問研究

2000-2005 年獲中央研究院學術諮詢總會獎助短期訪問研究

2003 年獲台灣磁性技術協會研究成果獎

2003-2006 Marquis Who's Who in Science and Engineering

研究

主要研究主題在探討奈米尺度超薄膜結構之材料性質，包含厚度僅為幾原子層之超薄膜、合金膜、雙層膜及多層膜；以各種樣品製備技術製作所需各式樣品，如分子束磊晶 MBE 、離子濺鍍與化學電鍍；並結合材料特性分析技術，如表面磁光科爾效應 SMOKE 、歐傑電子能譜術 AES 、低能量電子繞射 LEED 、退吸附質譜分析 TDS 、掃瞄穿隧電子顯微鏡 STM ；兼顧基礎研究與工業應用方向，深入瞭解奈米尺度超薄膜結構之磁、光、電、化學等特殊性質，以及自旋電子元件結構介面機制特性研究。目前主要研究方向為：

一、超薄膜物性研究：研究金屬 / 半導體介面磁性 (Co/Si 、 Co/Ge 等 ) 、超薄半導體膜 (Ge/Cu 與 Si/Cu 等 ) 、超薄氧化物 (CoO) 及垂直異向性高密度記錄材料 (Co/Ir) 之製作與特殊物性探討。

二、低維度磁性系統：研究在 Cu(511) 等階梯形基材上成長之低維度磁性樣品，以及相關之量子點與奈米線之物性探討。

教學

著作：

(1). Journal papers (in SCI journals):

1. J. S. Tsay , F. C. Shyu, T. I. Fu, and C. S. Shern, 1994, "Adsorption and Absorption of Hydrogen on a Pt(110) Surface", Chin. J. Phys. 32(2) , 195.

2. C. S. Shern, D. U. Chang, K. D. Shyu, J. S. Tsay , and Tsu-Yi Fu, 1994, "Initial growth of a silver thin film on a Pt(110)-(1x2) surface", Surf. Sci. 318 , 262.

3. J. S. Tsay , Tsu-yi Fu, P. S. Tsai, and C. S. Shern, 1994, "Comparative study of Ni ultrathin-film growth on Pt(110)-(1x1) and (1x2) at 130 K", J. Vac. Sci. Technol. A 12(6) , 3165.

4. C. S. Shern, J. S. Tsay , and Tsu-yi Fu, 1996, "Growth Mechanism of Ni on Pt(110) at Low Temperature", Appl. Surf. Sci. 92 , 74.

5. J. S. Tsay and C. S. Shern, 1996, "Initial Growth and Surface Alloy Formation of Ag on Pt(111)", Chin. J. Phys. 34(2) , 130.

6. J. S. Tsay and C. S. Shern, 1996, "Effect of annealing on Ag films on Pt(111)", J. Vac. Sci. Technol. A 14(4) , 2522.

7. J. S. Tsay and C. S. Shern, 1996, "Diffusion and Alloy Formation of Co Ultra-thin Film on Pt(111)", J. Appl. Phys. 80(7) , 3777.

8. J. S. Tsay , Y. E. Wu, and C. S. Shern, 1997, "Growth Mode and Inter-diffusion of Co on Pt(111)", Chin. J. Phys. 35(5) , 610.

9. J. S. Tsay and C. S. Shern, 1998, "Structure Evolution for Annealing Co Ultra-thin Film on Pt(111)", Surf. Sci. 396 , 313.

10. J. S. Tsay and C. S. Shern, 1998, "Rotated incommensurate domains of Co ultrathin films on Pt(111)", Surf. Sci. 396 , 319.

11. C. S. Shern, C. T. Tu, J. S. Tsay , and R. H. Chen, 1998, "Magnetic Properties of Ni/Pt(111) Thin Film Studied by MOKE", Chin. J. Phys. 36(2) , 106.

12. J. S. Tsay , Y. D. Yao, and C. S. Shern, 1998, "Dynamic study of a surface-confined alloy in an ultrathin Ag/Pt(111) film", Phys. Rev. B 58(7) , 3609.

13. C. S. Shern, S. L. Chen, J. S. Tsay , and R. H. Chen, 1998, "Stabilization of Co/Pt(111) against surface alloying by Ag overlayers", Phys. Rev. B 58(11) , 7328.

14. J. S. Tsay , C. S. Yang, Y. D. Yao, Y. Liou, and S. F. Lee, 1998, "Magnetic properties of ultrathin Co/Si(111) films", Jpn. J. Appl. Phys. Part 1, 37(11) , 5976.

15. C. S. Shern, J. S. Tsay, S. L. Chen, and Y. E. Wu, 1999, "Effect of annealing of Ag ultrathin films on Co/Pt(111) surface", J. Appl. Phys. 85(1) , 228.

16. J. S. Tsay and C. S. Shern, 1999, Response to Henzler's "Comment on ‘Rotated incommensurate domains of Co ultrathin films on Pt(111)'", Surf. Sci. 419 , 325.

17. J. S. Tsay and Y. D. Yao, 1999, "Magnetic phase diagram of ultrathin Co/Si(111) film studied by surface magneto-optic Kerr effect", Appl. Phys. Lett. 74 , 1311.

18. J. S. Tsay , C. S. Yang, Y. Liou, and Y. D. Yao, 1999, "Magnetic Properties of Ultrathin Co Films on Si(111) and CoSi 2 Surfaces", J. Appl. Phys. 85(8) , 4967.

19. C. S. Shern, J. S. Tsay , H. Y. Her, Y. E. Wu, and R. H. Chen, 1999, "Response and enhancement of surface magneto-optic Kerr effect for Co/Pt(111) ultrathin films and surface alloy", Surf. Sci. Lett. 429 , L497.

20. M.-T. Lin, C. C. Kuo, H. Y. Her, Y. E. Wu, J. S. Tsay , and C. S. Shern, 1999, "Giant enhancement of magneto-optical response and increase in perpendicular magnetic anisotropy of ultrathin Co/Pt(111) films upon thermal annealing", J. Vac. Sci. Technol. A, 17(5) , 3045.

21. J. S. Tsay , Y. D. Yao, Y. Liou, S. F. Lee, and C. S. Yang, 1999, "EFFECT OF Ag BUFFER LAYER TO ULTRATHIN Co FILMS ON Si(111) SURFACE", IEEE Trans. Mag. 35(5) , 3028.

22. J. S. Tsay , Y. D. Yao, Y. Liou, S. F. Lee, and C. S. Yang, 2000, "COMPARISON OF MAGNETIC PROPERTIES OF ULTRATHIN Co/Si(111) AND Co/Ag/Si(111) FILMS", J. Magn. Magn. Mater. 209 , 208.

23. J. Y. Lin, J. S. Tsay , Y. Liou, Y. D. Yao, S. F. Lee, and C. S. Yang, 2000, "High-Temperature Magnetization Anomaly in Co/Ag/Si(111) Ultrathin Films", J. Magn. Magn. Mater. 209 , 217.

24. J. S. Tsay , Y. D. Yao, and Y. Liou, 2000, "Magnetic phase diagram study of ultrathin Co/Si(111) films", Surf. Sci. 454-456 , 856.

25. J. S. Tsay , T. Mangen, R. -J. Linden , and K. Wandelt, 2001, "Comparative study of annealing effects for Cu/Pt(111) films with and without oxygen", Surf. Sci. 482-485 , 866.

26. J. S. Tsay , J. Y. Lin, C. S. Yang, Y. D. Yao, and Y. Liou, 2001, "Effects of a Ag overlayer on the magnetic properties of ultrathin Co/Cu(111) films", Surf. Sci. 482-485 , 1040.

27. J. S. Tsay , T. Mangen, and K. Wandelt, 2001, "Kinetic study of the formation of a surface-confined Cu 50 Pt 50 alloy", Thin Solid Films, 397(1-2) , 152.

28. J. S. Tsay , T. Mangen, R. -J. Linden, and K. Wandelt, 2001, "Adsorption of oxygen on ultrathin Cu/Pt(111) films", J. Vac. Sci. Technol. A 19(5) , 2217.

29. W. C. Cheng, J. S. Tsay , Y. D. Yao, K. C. Lin, C. S. Yang, S. F. Lee, T. K. Tseng, and H. Y. Neih, 2001, "Magnetic Properties of Ultrathin Co/Ge(111) and Co/Ge(100) Films", J. Appl. Phys. 89(11) , 7130.

30. J. S. Tsay , Y. D. Yao, J. Y. Lin, and C. S. Yang, 2001, "Oscillation of the coercive force for ultrathin Ag/Co/Cu(111) films", J. Appl. Phys. 89(11) , 7377.

31. Y. E. Wu, J. S. Tsay , S. C. Chen, T. Y. Fu, and C. S. Shern, 2001, "Magnetic Properties of Co/Si(100) Thin Films Studied using Magnetooptic Kerr Effect Technique ", Jpn. J. Appl. Phys. part 1, 40(12) , 6825.

32. J. S. Tsay , Y. D. Yao, T. K. Tseng, and C. S. Yang, 2002, "Magnetic studies of ultrathin cobalt layers on a Ge(100) surface", J. Magn. Magn. Mater. 239(1-3) , 294.

33. J. S. Tsay , Y. D. Yao, K. C. Wang, W. C. Cheng, and C. S. Yang, 2002, "Magnetic properties of ultrathin cobalt films grown on Ge(111) and Si(111) substrates", J. Appl. Phys. 91(10) , 8766 .

34. J. S. Tsay , Y. D. Yao, K. C. Wang, W. C. Cheng, and C. S. Yang, 2002, "Effect of annealing on the magnetic properties of the ultrathin Co/Ge(111) films", Surf. Sci. 507-510 , 498 .

35. J. S. Tsay , Y. D. Yao, C. S. Yang, W. C. Cheng, T. K. Tseng, and K. C. Wang, 2002, "Surface magneto-optic Kerr effect study in ultrathin Co/Ge(111) and Co/Ge(100) films", Surf. Sci. 513 , 93.

36. J. S. Tsay , Y. D. Yao, W. C. Cheng, T. K. Tseng, K. C. Wang, and C. S. Yang, 2003, "Magnetic properties influenced by interfaces in ultrathin Co/Ge(100) and Co/Ge(111) films", Appl. Surf. Sci. 219 , 88.

37. J. S. Tsay , H. Y. Nieh, C. S. Yang, Y. D. Yao, and T. S. Chin, 2003, "Effects of Ag buffer layer on the magnetic properties of ultrathin Co/Ge(111) films", J. Appl. Phys. 93(10) , 8728.

38. J. S. Tsay , L. W. Chang, and A. B. Yang, 2003, " Formation and annealing effect for close-packed Ge/Cu(111) layers", J. Vac. Sci. Technol. A 21(6) , 1892 .

39. J. S. Tsay , H. Y. Nieh, C. S. Yang, and Y. D. Yao, 2004, "Thickness dependency of magnetic properties in Co/Ge(111) ultrathin films", J. Magn. Magn. Mater. 272-276 , E829.

40. J. S. Tsay , H. Y. Nieh, Y. D. Yao, Y. T. Chen, and W. C. Cheng, 2004, "Magnetic phases of Co/Ge(111) studied using surface magneto-optic Kerr effect", Surf. Sci. 566-568 , 226.

41. J. S. Tsay , H. Y. Nieh, Y. D. Yao, and T. S. Chin, 2004, "Magnetic properties of ultrathin Co/Ag/Ge(111) films studied using surface magneto-optic Kerr effect technique", J. Magn. Magn. Mater. 282 , 78.

42 J. S. Tsay , Y. T. Chen, Y. D. Yao, and W. C. Cheng, 2004, "Magnetic properties of interfacial layers in Co/Ge(111) thin films", J. Magn. Magn. Mater. 282 , 81.

43. J. S. Tsay , C. W. Su, C. H. Hwang, and Y. D. Yao, 2005, " Low-temperature studies of magnetic phases of the interfacial layers for Co/Ge(100) and Co/Ge(111) films ", J. Vac. Sci. Technol. A 23(4) , 781.

44. C. W. Su, J. S. Tsay , C. H. Hwang, and Y. D. Yao, 2005, " Magneto-optical properties of Co/Ge(100) with ultrathin Ag buffer layers ", J. Appl. Phys. 97 , 10J111.

(2) Patent:

1. 發明專利 (Invention): United States Patent Number: 6,753,192 B1, Date of Patent ： March 19, 2004, Preparation of Ultrathin Magnetic Layer on Semiconductors Inventors ： Y.D. Yao, J.S. Tsay, H.Y. Nieh, C.S. Yang (2004).

(3) Others

1. J. S. Tsay and Tsu-Yi Fu, "Imaging standing waves of electron gas in quantum wells by scanning tunneling microscope", Physics Bimonthly, 16(3) , pp. 280-285, 1994 , in Chinese.

2. W. C. Luie, J. S. Tsay , Tsu-yi Fu, and C. S. Shern, "Physical teaching module for junior high school – thermodynamics: specific heat", 1995, in Chinese.

3. J. S. Tsay , "Growth Mode and Alloy Formation of Co Ultrathin Films on Pt(111) Surface", Doctoral Thesis, National Taiwan Normal University , 1997.

4. J. S. Tsay and C. S. Shern, 1998, "Thermal stability of ultrathin Co/Pt(111) films studied by AES", Surf. Sci. Spec. 5(4) , 324.

5. J. S. Tsay and C. S. Shern, 1999, "Electronic Structure of Ag/Pt(111) Studied by UPS", Surf. Sci. Spec. 6(1) , 55.

6. J. S. Tsay , Y. D. Yao, and C. S. Shern, 1999, "Thermal Desorption of Ultrathin Ag Film, from a Pt(111) Surface, by AES", Surf. Sci. Spec. 6(1) , 60.

7. J. S. Tsay , T. Mangen, R. -J. Linden, and K. Wandelt, "Investigations of the surface-confined Cu 50 Pt 50 alloy and the reaction of oxygen with Cu/Pt(111) system", one section in Annual report, 1999, for Institute for Physical and Theoretical Chemistry of University Bonn.

8. P. C. Tsai, T. H. Chou, and J. S. Tsay , "Determination of the energy barrier of diffusion for surface atoms during the formation of a surface-confined alloy", Tunghai Science, 4 , pp. 13-23, 2002, in Chinese.

9. H. Y. Nieh, J. S. Tsay , and Y. D. Yao, "Introduction on the magnetic ultrathin films grown on semiconductors", News Magazine of Taiwan Association for Magnetic technology, 35 , pp. 1-6, 2003, in Chinese.

10. J. S. Tsay , "Surface magneto-optic Kerr effect and the magnetic properties of ultrathin films", Physical Bimonthly, 25(5) , pp. 605-613, 2003, in Chinese.

11. S. S. Su, Y. L. Lee, and J. S. Tsay , "Magnetic study of Co/Ir(111) using surface magneto-optic Kerr effect", Tunghai Science, 6 , pp. 1-15, 2004, in Chinese.