Han,ZhengHe

Professor

 

Department of Physics, Tsinghua University

School of Sciences Building

Beijing 100084, China

 

Phone:8610-62771331

Fax:8610-62785913

 

z.han@tsinghua.edu.cn

 

Links:

Education and Employment
Education:

1996.  Ph. D., physics,  Niel Bohr Institute, Copenhagen University, Denmark

1985.  M.S., materials science, Central Iron and Steel Research Institute, Beijing, P. R. China.

1982.  B.S., physics,  Dept. of Physics, Tsinghua University, Beijing, P. R. China.

Employment:

2000-now, Tsinghua University, China, professor.

1997-2000, Bi-2223 tapes, NST, Denmark. Senior technical adviser,

1993-97, Bi-2223 tapes, NKT Research Center, Denmark. Research Engineer.

1990?93, YBCO thim film, University of Link橛ing, Sweden. Research Engineer.

1986?90, Amorphous alloy, high Tc materials, thin film. Royal Institute of Technology, Stockholm, Sweden. Visiting Researcher.

 

Teaching

Undergraduate Course揂pplication of HTS Superconducting materials?2004 Spring)

 

Interests
Special attention is paid to HTS Superconducting materials and its application

2 BSCCO Superconducting Tape

a The mechanical property and fabrication process of HTS superconducting tape

b Miscrostructure evolution and Bi-2223 formation in Bi-2223/Ag Tapes

c The fabrication of BSCCO/Ag superconducting tape for electronic application.

d Silver alloys used in composite BSCCO tapes

  

2 YBCO coated conductor

a YBCO thick film for the coated conductor.( Sol-gel, TFA-MOD method)

b Non-vacuum fabrication and growth mechanism of buffer layer thin films for YBCO coated conductors (Several oxide thin films)

c Fabrication of biaxially textured Ni or Ni-based alloy tape by RABiTS process

d New ion structure modification (ISM) process for fabrication of

biaxially textured Ni tape or modification of YBCO film, as well as oxide

buffer layers

3. Measurement and application of HTS tape

a Measurement of the superconducting property of HTS materials

b Design of HTS magnet/coil

c Find a good way to measure AC loss measurement and search for the method to reduce the AC loss

d Design of superconducting magnetic levitation

 

Awards and Membership
 
Selected Publications
Author or co-author of about 40 papers published in international refereed journals.

Some of them are widely cited by peers. Over 10 plenary or invited talks at International

and National Conferences

Selected Papers:

13. X. P. Chen1丆4, Z. H. Han1, M.Y. Li1丆4, M. Jun, Q.Liu, 揙bservation  

   of the formation and growth of secondary phases in Bi-2223/Ag tapes?  

   Physica  C (2003)  391 (4) 363-368

14. Z. Han, H. Wu, P. Skov-Hansen and P. Vase,媅echanical Properties of Bi-   2223/Ag Composite Tapes?  EUCAS'99, Sitges, Spain, 14-17 Sept. 1999.

3. P. Skov-Hansen , Z. Han and J.I. Bech, 揝tresses and Strains in Multi-

   Filament HTS Tapes?IEEE Trans. Appl. Supercond., vol. 9, no.2, pp2617-2620,  

   June 1999

4. Z. Han, P. Bodin, W. G. Wang, M. Bentzon, P. Skov-Hansen, J. Goul,  

   and P. V. Vase, 揊abrication and characterisation of superconducting Bi-

   2223/Ag tapes with high critical current densities in km length?  IEEE  

   Trans. Supercon. 9 (1999) 2537.

5. Z. Han, P. Skov-Hansen and T. Freltoft, 揟opical Review: The mechanical

   deformation process of superconducting BiSrCaCuO/Ag composites? Supercond.

   Sci. Technol., vol.10, pp371-387, 1997.

6. Z. Han, P. Skov-Hansen and P. Vase, 揗echanical properties of Bi-2223/Ag

   composite tapes for large scale applications? MT-15, Beijing, October 20-

   24,1997

7. Z. Han, P. Vase, Y. Q. Shen, and T. Freltoft, 揝uperconducting

   Bi2Sr2Ca2Cu3Ox Closed-loop Coils Carrying Persistent Current at Temperatures

   above 77 K?IEEE Trans. Supercon. 7 (1997) 873.

8. Z. Han, T. I. Selinder, and U. Helmersson, Formation of Cu-rich

   particles on the surface of YBa2Cu3O7-x thin film grown by in situ off-axis  

   sputtering, J. Appl. Phys. 75, 2020 (1994).

9. Z. Han, U. Helmersson, and T. I. Selinder, Observation of metallic

   resistivity behavior following a 1/r300k dependence of Tc in a YBa2Cu3O7-x

   thin film with varying oxygen deficiency, Phys. Rev. B 48, 7708 (1993).

10. Z. Han, U. Helmersson, T. I. Selinder, and J.?E. Sundgren,

   X?ray?diffraction mapping of epitaxial YBa2Cu3O7?x thin films:

   Determination of in?plane epitaxy and a?, b?, and c?axis lengths in films

   with varying oxygen deficiency,  Phys. Rev. B 47, 3431 (1993).

11. Han Zhenghe, K. Tsushima, N. Karpe, H. Medelius, Klas Jacobson and K.

   V. Rao, Preparation and Electronic Properties of Reactive Magnetron

   Sputter?deposited Bi?Ca?Sr?Cu?O Thin Film High?Tc Superconductors, J. of

   Crystal Growth 91, 368 (1988).

12. Han Zhenghe, Wang Xinlin and Ke Cheng, Magnetic Stability of Water

   Quenched Cobalt?based Amorphous Alloy, Materials Sci.& Eng. 99, 199 (1988).