National High Magnetic Field Laboratory > Applied Superconductivity Center > Thesis Archive

Graduate Theses Supervised by David C. Larbalestier at the Applied Superconductivity Center

(i) Ph. D. :

1. David G. Hawksworth, The Upper Critical Field and High Field Critical Current of Niobium-Titanium and Niobium-Titanium Based Alloys, 1981.

2. David B. Smathers, Compositional Analysis of Diffused Nb3Sn Layers, 1982.

3. David L. Moffat, Phase Transformations in the Titanium-Niobium Binary Alloy System, 1985.

File name: David_Moffat_PhD-crop-fullOCR2. pdf File size: 17 MB

4. Kenneth R. Marken, Characterization Studies of Bronze-Process Filamentary Nb3Sn Composites, 1986.

ASC Superconducting Materials Group in 1986

5. William H. Warnes, The Resistive Critical Current Transition in Composite Superconductors, 1986.

6. Christoph Meingast, Flux Pinning by ΔHc and ΔΚ Mechanisms in Nb-Ti Superconductors, 1988.

7. Henry Muller, The Upper Critical Field of Niobium-Titanium Alloys, 1990.

File name: hjm89phd. pdf File size: 9.4 MB

8. Manfred Daeumling, Superconducting Magnetic Properties and Granularity in Single and Polycrystalline (Y,Dy)Ba2Cu3O7-d, 1990.

9. James McKinnell, Flux Pinning in Superconducting Nb-Ti Alloys, 1990.

File name: jcm90phd. pdf File size: 13.8 MB Full version

File name: jcm90phd-textonly.pdf File size: 541 kB Text only

10. Jeffrey M. Seuntjens, Understanding Weak Links Through the Processing of (RE) Ba2Cu3O7-d, 1990.

11. João Vargas, The Critical Current Density of Y Ba2Cu3O7-d Single Crystals, 1992.

12. Lance D. Cooley, The Scaling Rule and Fluxon Core Pinning in a High Field Superconductor with Artificially Introduced Pins, 1993.

13. George Stejic, The Mean-Field Flux Pinning Theory, 1993.

14. Laura J. Bonney, Microstructural Dependence of Critical Current Densities in the SnMo6S8 Chevrel Phase Superconductor, 1994.

15. Paul D. Jablonski, A Novel Powder Metallurgy Technique for Producing Artificial Pinning Centers in Nb-Ti Superconductors, 1994.

File name: pdj94phd.pdf File size: 14 MB

16. Harry S. Edelman, Current Limiting Mechanisms in Bi2Sr2CaCu2Ox Superconducting Tapes, 1995.

17. Jyh-Lih Wang, Study of Current Limiting Mechanisms in Bi-Sr-Ca-Cu-O Superconducting Tapes by Electromagnetic and Microstructural Characterization of Bulk-Scale Bicrystals, 1996.

18. Nina Heinig, The Strong-to-Weak Coupling Transition in Low Misorientation Angle Thin Film and Bulk YBa2Cu3O7-d Bicrystals, 1996.

File name: nfh96phd. pdf File size: 3.3 MB

19. Eric Kadyrov, Critical Currents in Superconducting Thin Films and Tapes, 1996.

20. Michael Field, Electromagnetic Properties of Melt-textured YBa2Cu3O7-d Bicrystals of General Misorientation, 1996.

File name: mbf96phd. pdf File size: 7 MB

21. Jeff Parrell, The Materials Processing, Connectivity, Flux Pinning, and Critical Current Density of Ag-Clad (Bi,Pb)2Sr2Ca2Cu3Ox Superconducting Tapes, 1996.

File name: jap96phd. pdf File size: 17 MB

22. Robert Heussner, Flux Pinning in Superconducting Nb-Ti Wires with Nb Artificial Pinning Centers, 1998.

File name: rwh98phd. pdf File size: 2.4 MB

23. Alex Pashitski, Investigation of Magnetic Flux Distribution and Current Flow in High Temperature Superconductors by Means of Magneto-optical Imaging, 1998.

24. Matthew Feldmann, Current flow in YBa2Cu3Ox Deformation Textured Coated Conductors, 2001.

File name: feldmann thesis (august 2001). pdf File size: 13 MB

25. Michael Naus, Optimization of Internal-Sn Nb3Sn Composites, 2002.

File name: mtn02phd. pdf File size: 11 MB

26. Valeria Braccini, Superconducting Behavior of Bulk MgB2: Dependence of Critical Temperature, Irreversibility Field and Upper Critical Field on the Normal State Properties, Jointly advised with Professor Antonio S Siri, Department of Physics University of Genoa, Italy, 2003.

27. Szuya Liao, Analysis of Current Limiting Mechanisms in Ag-sheathed Bi-based High-Tc Superconducting Tapes by Quantitative Magneto-Optical Imaging, 2004.

28. Arno Godeke, Performance Boundaries in Nb3Sn Superconductors, 2005.

File name: ag05phd. pdf File size: 9.7 MB

29. Sang Il Kim, The Critical Current Density of YBCO Coated Conductors, July 2007.

File name:Sang Il Kim PhD Thesis 2007. pdf File size: 9.7 MB

30. Ben Senkowicz (jointly with Eric Hellstrom), Jc Optimization of Ex-Situ MgB2, July 2007.

File name:Senkowicz PhD Thesis July 12 2007. pdf File size: 9.7 MB

31. Matthew Jewell, The Effects Of Strand Architecture On The Fracture Propensity Of Nb3Sn Composite Wires, Aug. 2008.

File name: mcj08phd. pdf File size: 15.8 MB

32. Zhijun Chen, Flux pinning in YBa2Cu3O7-x coated conductors, Nov. 2008.

33. Zu-Hawn Sung, The Influence of Grain Boundaries on the Properties of Superconducting Radio Frequency Cavity Niobium, August 2010.

File name: zhs10phd.pdf File size: 5.5 MB

34. Jian Zhou, The Effects Of Variable Tin Content On The Properties Of A15 Superconducting Nb3Sn, November 2011.

35. Aixia Xu, Flux pinning study of REBa2Cu3O7-x coated conductors for high field magnet applications, August 2012.

36. Pei Li, Study Of Grain Boundaries In Ca-Doped YbBCO Thin Films, April 2013.

37. Peng Chen, Processing and Characterization of Superconducting Solenoids Made of Bi-2212/Ag-Alloy Multifilament Round Wire for High Field Magnet Applications, April 2016.

38. Charlie Sanabria, A New understanding of the Heat Treatment of Nb3Sn Superconducting Wires, April 2017.

File name: cs17phd.pdf File size: 7.5 MB

39. Xinbo Hu, Studies on the Origins and Nature of Critical Current Variations in Rare Earth Barium Copper Oxide Coated Conductors, November 17, 2017.

40. Christopher Segal, Performance Limits of Powder in Tube Processed Nb3Sn Superconducting Wires, April 2018.

File name: SegalDissertation2018.pdf File size: 97 MB

41. Michael D. Brown, Mechanical and Electrical Characterization of Critical Current Density in Round and Rectangular reinforced Bi-2212 Wires for High Field Magnet Application, November 16, 2018.

42. Daniel S. Davis, Quench Protection of Bi₂Sr₂CaCu₂O₈₊ₓ High Temperature Superconducting Magnets, July 10, 2019.

43. Yavuz Oz, Investigation of the Transport and Magnetization Properties of High Jc Bi-2212 Round Wires, June 29, 2021.

44. Ashleigh Francis, Separating the Effects of different Flux Pinning Defects on the Field, Angular, and Temperature Dependence of Jc in Commercial REBCO Coated Conductors, November 8, 2022.

45. Nawaraj Paudel, Alloying Effects into Upper Critical Field of Nb3Sn Superconductor, November 2023.

46. Shaon Barua, Critical Current Distributions in Multifilamentary Bi2Sr2CaCu2O8+x Round Wires, March 2024.

ASC Superconducting Materials Group past and present in 2018


Under the Supervision of Professors Susan Babcock. Eric Hellstrom and David Larbalestier at the University of Wisconsin-Madison

1. Jodi Reeves, Microstructural Investigation of Current Barriers in High Temperature Superconducting Tapes and Coated Conductors, 2001.

File name: jr01phd. pdf File size: 8.6 MB


Under the Supervision of Professor Eric Hellstrom

1. Yongwen Yuan, Advancing Materials Processing, Eliminating Current Limiting Mechanism, And Enhancing Critical Current Density Of Ag-Sheathed (Bi,Pb)2Sr2Ca2Cu3Ox Composite Conductors, 2004.

2. Feng Lu, Growth and BaZrO₃ doping study on superconducting MBa₂Cu₃O₇-x (M=Y,Sm) films using a fluorine-free metal organic decomposition process, 2009.

(University of Wisconsin-Madison)

3. Tengming Shen, Processing, Microstructure, and Critical Current Density of Ag-Sheathed Bi2Sr2Ca2Cu3Ox Multifilamentary Round Wire, PhD 5-3-2010.

4. Jeremy Weiss, Synthesis and Characterization of Superconducting Ferropnictide Bulks and Wires," PhD 4-9-2015.

5. Maxime Matras, Investigation of Ag-Sheathed Multi-Filamentary Bi2Sr2CaCu2O[8-x] Superconducting Round Wires Processed with Overpressure, for High Field Magnets, November 2016. PhD 11-17-2016.

6. Yesusa Collantes, Understanding why grain boundaries limit the critical current density of Fe-based superconductors and exploring ways to increase current density, November 8 2018.

7. Imam S. Hossain, Understanding the Role of Wire Architecture in Determining the Critical Current Performance of Bi-2212 Round Wire, PhD March 30, 2022.


Under the Supervision of Professor Lance D. Cooley, Florida State University

1. Santosh Chetri, Methodology for the Characterization of Surface Treated High Purity Niobium, January 2023.
Co-directed by Irinel Chiorescu

2. Virginia Phifer, Experimental Investigations of Tape-to-Tape Contact Resistance and Its Impact on Current Distribution around Local IC Degradations in Corc® Cables, January 2023.


Under the Supervision of Professor Fumitake Kametani, Florida State University

1. Temidayo Abiola Oloye, Investigation of Micro-/ Nano-Structural Factors Responsible for ‘A-Axis’ Alignment and Its Correlations to Critical Current Density (Jc) in Over Pressure Heat Treated (Opht) Bi-2212 Round Wires, April 2023.


Under the Supervision of Professor Seungyong Hahn, Florida State University

1. Kabindra Bhattarai, Understanding multi-physics of quench in “no-insulation” rare earth barium copper oxide superconducting magnets, May 2019.


(ii) Students graduating with MS degrees:

Under the Supervision of David C. Larbalestier

1. Francisco Lamelas, by examination, 1983.

2. Mary I. Buckett, The Effects of Cold Work and Tantalum Additional on Precipitation Behavior in Titanium-Niobium Alloys, 1986.

3. Kathryn E. Hautanen, by examination, 1990.

4. Kenneth J. Faase, Quantification of Heat Treated Nb-Ti Composite Microstructures, 1991.

5. Yvonne High, A Study of the Competitive Reactions Occurring during the Heat Treatment of Silver-Sheathed (Bi,Pb)2Sr2Ca2Cu3Ox Aerosol Spray Pyrolysis Powder, 1993.

6. Tomas Willis, The superconducting properties of Hot Isostatically Pressed PbMo6S8, 1994.

7. Karunah Muthiah, by examination, 1995.

8. John Anderson, Processing Dependence of Connectivity, Flux Pinning, and Critical Current density in Ag-Sheathed (Bi,Pb)2Sr2Ca2Cu3Ox Superconducting Tapes, 1998.

9. Christopher Hawes, Investigations of the Inhomogeneity of a Powder-in-Tube Nb3Sn Conductor, 2000.

File name: cdh00msc. pdf File size: 12 MB

10. Chad Fischer, Investigation of the Relationships Between Superconducting Properties and Nb3Sn Reaction Conditions in Powder-in-Tube Nb3Sn Conductors, 2002.

File name: cmf02msc. pdf File size: 3.9 MB

11. Jermal Chandler, Studies of the Irreversibility Field of Post Annealed (Bi,Pb)2Sr2Ca2Cu3O10-x (BSCCO-2223) Tapes, 2003.

12. George Daniels, Electromagnetic properties of Ca-doped YBa2Cu3O7-d grain boundaries, 2003.

13. Nicholas Nelson, The upper-critical field of Nb-Ti and Nb-Ti-Ta, 2006.

14. David Myers, Characterization of Bi2Sr2CaCu2O8-x/Ag-Alloy conductor samples extracted from wind and react solenoids, MS 7-28-2009.

15. Manan Sheth, Fatigue behavior of Nb3Sn composite strands used for ITER magnets, MS 6-21-2011.

16. Andrew Whittington, Shrink Tube Insulation Apparatus for REBCO Superconducting Tapes for Use in High Field Magnets, July 2014.

17. Michael Small, Microscopic Studies of Edge Slitting Mechanisms in REBCO Coated Conductors, June 30, 2021.

18. Jonathan Cooper, Failure Analysis of High Temperature Superconducting Magnets, July 12, 2021.

19. John Tietsworth, Understanding the Cu-Sn mixing heat treatment and its effects on the formation of Nb3Sn in Rod-In-Tube wires of varying Cu:Sn ratios, March 2024.


Under the Supervision of David C. Larbalestier and Seungyong Hahn

1. Kyle Radcliff, Mechanical properties of Superpower and Sunam REBCO coated conductors, MS June 2018.

Under the Supervision of Professor Eric Hellstrom

1. Michael LoSchiavo, Processing Issues of Bi2Sr2CaCu2O8 Round Wire Involving Leakage and Alumino Silicate Insulation, MS 7-28-2009.

Other Applied Superconductivity Center theses available in this archive:

PhDs Under the Supervision of Professor John M. Pfotenhauer at the University of Wisconsin-Madison

Robert C. Duckworth, Contact Resistance and Normal Zone Formation In Coated Yttrium Barium Copper Oxide Superconductors, 2001.

File name: rcd01phd. pdf File size: 2.6 MB

Daniel W. Hoch, Design and Test of a 1. 8K Liquid Helium Refrigerator, 2004.

File name: dwh03msc. pdf File size: 2.5 MB

Jong Hoon Baik, Design Methods in Active Valve Pulse Tube Refrigerator, 2003.

File name: jhb03phd. pdf File size: 2.6 MB