Superconductivity Group  PublicationsProf. D.P. Hampshire 

Personnel  Post Graduate Vacancies
Surface Plots of I_{c}(B, T, ε)
for Nb_{3}Al
If you use
the data on these webpages please remember to quote the associated published
journal paper
 it
is one of the important metrics in
Raw J_{C}(B, T, ε)
data and scaling laws are available in MS Excel format.
Fusion Energy reports are also listed below.
Video
link re fusion :
https://www.youtube.com/watch?v=6hEe1ZUKX6A
First (quantitative paper) calculations and measurements showing how resistive grain boundaries must be to limit Jc in Bi HTS polycrystalline superconductors. Here we show: Bi2212 has low grain boundary resistivity and hence potential for high Jc if grain and grainboundary pinning is added; Bi2223 must be aligned to increase Jc.
Alexander I Blair and Damian P Hampshire TimeDependent GinzburgLandau Simulations of the Critical Current in Superconducting Films and Junctions in Magnetic Fields, scheduled for June 2018 (vol28, 4).
A P Smith, E Surrey, S H Moon and D P Hampshire Comparison of Jc in GdBCO tape using Dc magnetisation and harmonic Ac susceptibility measurements, scheduled for June 2018 (vol 28, 4).
Francis J Ridgeon, M J Raine, M Lakrimi, A Thomas, T Boutboul and D P Hampshire Selffield Effects on Jc(B,T) Measurements of NbTi strands in HIgh Magnetic Fields scheduled for June 2018 (vol 28, no 4).
Jack Greenwood, Elizabeth Surrey and Damian P Hampshire. Biaxial Strain Measurements of J_{C} on a (RE)BCO Coated Conductor, IEEE Transactions on Applied Superconductivity, scheduled for June 2018 (vol. 28, no. 4).
Guanmei Wang, Mark J. Raine, and Damian P. Hampshire. How resistive must grain boundaries in polycrystalline superconductors be, to limit Jc?  SUST 20 104001 (2017) Open Access
First (quantitative paper) calculations and measurements showing how resistive grain boundaries must be to limit Jc in polycrystalline superconductors. We show: Jc values in stateoftheart technological highfield superconductors are only 1 % of theoretical limit; Large increases in Jc may be achieved in Nb_{3}Sn, by completely removing the grain boundaries from these materials.
Francis J. Ridgeon, Mark J. Raine, D. P. Halliday, M’hamed Lakrimi, Adrian Thomas, and Damian P. Hampshire. Superconducting properties of Tialloys (Ti64 and Ti6242) for critical current barrels IEEE Trans. Appl. Super. 27 4 4201205 (2017)
Kozo Osamura, Shutaro Machiya and Damian Hampshire. Mechanism for the uniaxial strain dependence of the critical current in practical REBCO tapes  SUST 29 065019 (2016)
Yeekin Tsui, Elizabeth Surrey and Damian Hampshire. Soldered Joints  An essential component of demountable HTS fusion magnets  SUST 29 075005 (2016)
Damian Hampshire (comments only): The EU under a microscope: does UK science want in or out?  Durham Palatinate  Published by Durham University Students Union, May (2016)
Yeekin Tsui, Ra’ad Mahmoud, Elizabeth Surrey and Damian Hampshire. Superconducting and Mechanical Properties of LowTemperature Solders for Joints  IEEE Trans Appl Super 26 3 6900204 (2016)
Di Hu, Mark D. Ainslie, Mark J. Raine, Damian P. Hampshire, and Jin Zou. Modelling and comparison of infield critical current density anisotropy in high temperature superconducting (HTS) coated conductors  IEEE Trans Appl Super 26 3 6600906 (2016)
P. K. Ghoshal, R. J. Fair, D. P. Hampshire. V. HagenGates, D. Kashy, R. Legg, R. RenukaGhoshal and Y. Tsui Design and Evaluation of Joint Resistance in SSC Rutherford type cable splices for Torus magnet for the Jefferson Lab 12 GeV Upgrade  IEEE Trans Appl Super 26 4 4800304 (2016)
T. Boutboul, V. Abaecherli, G. Berger, D. Hampshire, J. Parrell, M. Raine, P. Readman, B. Sailer, K. Schlenga, M. Thoener, E. Viladiu, Y. Zhang. European Nb3Sn Superconducting strand production and characterisation for ITER TF coil conductor  IEEE Trans Appl Super 26(4) June 2016
T. Lee, I. Jenkins, E. Surrey and D. P. Hampshire  Optimal design of a toroidal field magnet system and cost of electricity implications for a tokamak using high temperature superconductors Fusion Engineering and Design 98 (2015) DOI: 10.1016/j.fusengdes.2015.06.125
D. Hu, M. D. Ainslie, J. P. Rush, J. H. Durrell, J. Zou, M. J. Raine and D. P. Hampshire  DC characterization and 3D modelling of a traingular, epoxyimpregnated high temperature superconducting coil SUST 28 065011 (2015)  Highlights of 2015 : SuST Highlights of 2015
P. Sunwong, J. S. Higgins, and D. P. Hampshire  Probes for investigating the effect of magnetic field, field orientation, temperature and strain on the critical current density of anisotropic hightemperature superconducting tapes in a splitpair 15 T horizontal magnet  Review of Scientific Instruments 85 065111 (2014)
K. Osamura, S. Machiya, D.P. Hampshire T. Toshinori, T. Shobu, K. Kajiwarta, G. Osabe, K. Yamazaki, Y. Yamada, J. Fujikami.  Uniaxial strain dependence of the critical current of DiBSCCO tapes  SUST 27 085005 2014)
P. Sunwong, J. S. Higgins, Y. Tsui, M. J. Raine and D. P. Hampshire  The critical current density of grain boundary channels in polycrystalline HTS and LTS superconductors in magnetic fields  SUST 26 095006 (2013)2013)
G. J. Carty and D. P. Hampshire  The critical current density of an SNS Josephsonjunction in high magnetic fields  SuST 26 065007 (2013)
E. (Betti) Pusceddu and D. P. Hampshire  Nanocrystalline superconducting islands of Nb_{3}Ge in a resistive grain boundary matrix with a bulk critical temperature of 12 K  SUST 115014 (2012)
Y. Tsui, and D. P. Hampshire  Critical current scaling and the pivotpoint in Nb3Sn strands SuST 25 054008 (2012)
Y. Tsui, M. J. Raine, and D. P. Hampshire  Extended characterisation of ITER strands _{} TARSIS 2012.pdf 120322 ITERBEASI.xls 120322ITERBEASII.xls 120322ITEROST.xls.
P. Sunwong J. S. Higgins and D. P. Hampshire Angular, Temperature and Strain Dependencies of the Critical Current of DIBSCCO Tapes IEEE Trans Magn. 21 No3 p2840 (2011)
J. S. Higgins and D. P. Hampshire  Critical Current Density of YBCO Coated Conductors under High Compression in High Fields IEEE Trans Magn. 21 No 3 p3234 (2011)
M. J. Raine and D. P. Hampshire  Characterization of the Low Temperature Superconductor Niobium Carbonitride IEEE Trans Magn. ASC 21 no3 p3138 (2011)
P. Sunwong, J S Higgins and D. P. Hampshire 
Critical current measurements of DIBSCCO tapes as a function of angle
in high magnetic fields
J. Phys.: Conf. Ser. 234 022013 (2010)
X. F. Lu and D. P. Hampshire 
The field, temperature and strain dependence of the critical current
density of a powderintube (PIT) Nb3Sn superconducting strand
SuST 025002 (2010)
H. Armstrong, D. Halliday and D. P. Hampshire  Photoluminescence of Gold, Copper and Niobium as a function of temperature  Journal of Luminescence 129 16101614 (2009)
X. F. Lu, S. Pragnell and D. P. Hampshire  Heat treatment optimisation of advanced Nb_{3}Sn strands Numerical Data  Excel files EAS DU20083 wire.xls;
Numerical Data  Excel files EAS DU20086 wire.xls; Numerical Data  Excel files EAS DU20087 wire.xls; Numerical Data  Excel files EAS DU20088 wire.xls.D. M. J. Taylor, M. AlJawad and D. P. Hampshire 
A new paradigm for
fabricating bulk highfield superconductors Supercond. Sci. Tech
21 (2008) 125006
G. J. Carty and D. P. Hampshire  Visualising the mechanism that determines the critical current density in polycrystalline superconductors using timedependent GinzburgLandau theory  Phys. Rev. B. 77 (2008) 172501 also published in Virtual journal of applications of Superconductivity 15th May 2008
Damian P. Hampshire  Welcome to the New Year! Supercond. Sci. Tech. 21 (2008) 010201
J. Y. Xiang, C. Fleck and Damian P. Hampshire  Bulk nanocrystalline superconducting YBa_{2}Cu_{3}O_{7x} J. Phys: Conference Series 97 (2008) 012237.
D.C. Larbalestier, K. Osamura and D. P. Hampshire  MEM07: The 5th Annual Workshop on Mechanical and Electromagnetic Properties of Composite Superconductors (Princeton, NJ, USA, 21–24 August 2007)  Supercond. Sci. Technol. 21 No 5 (May 2008) 050301
D. M. J. Taylor and D. P. Hampshire  Relationship between the nvalue and critical current
in Nb_{3}Sn superconducting wires exhibiting intrinsic and extrinsic
behaviour  Supercond. Sci. Tech 18 (2005) S297S302
D. M. J. Taylor and D. P. Hampshire  The scaling law for the straindependence of the
critical current density in Nb_{3}Sn superconducting wires  Supercond.
Sci. Tech 18 (2005) S241S252
G. J. Carty and D. P. Hampshire  Numerical studies on the effect of normalmetal coatings on
the magnetization characteristics of typeII superconductors  Phys. Rev. B.
71 (2005) 144507  also published in the May 1st, 2005 edition of the
Virtual Journal of Applications of Superconductivity.
D. M. J. Taylor and D. P. Hampshire  Properties of helical springs used to measure the axial
strain dependence of the critical current density in superconducting wires  Supercond.
Sci. Tech. 18 (2005) 356368
D. M. J. Taylor and D. P. Hampshire  Tests of advanced Nb_{3}Sn strands (EFDA/031126) Numerical Data  Excel files OKSC wire.xls, Numerical Data  Excel files OST wire.xls
R. Zanino, M. Bagnasco, G. Dittrich, W. H. Fietz,
H. Fillunger, D. P. Hampshire, R. Heller, P. Komarek, O. Langhans, R. Maix, V.
Marchese, N. Martovetsky, N. Mitchell, A. Nijhuis, S. Raff, M. Ricci, M.
Suesser, E. Salpietro, L. Savoldi Richard, D. M. J. Taylor A. Ulbricht, A.
Vostner, F. Wuechner and G. Zahn  T_{CS}
Tests and Performance Assessment of the ITER Toroidal Field Model Coil (Phase
II)  IEEE Trans. Appl. Supercond. 14, 1519 (2004)
D M J Taylor and D. P Hampshire  Effect of axial strain cycling on the critical current
density and nvalue of ITER niobiumtin wires  Physica C. 401
(2004) 4046
H J Niu and D P Hampshire  Critical
parameters of disordered nanocrystalline superconducting Chevrel phase PbMo_{6}S_{8}.
Phys. Rev. B 69, 174503 (2004).
D. M. J. Taylor, P. Foley, H. J. Niu and D. P. Hampshire
 Critical current
measurements of TFMCLMI and CSMCVAC Nb_{3}Sn measurements, FEA
corrections and the scaling law parameterisation (EFDA/031103) (Appendix)
Numerical
Data  Excel files EMLMI wire.xls,
Numerical Data  Excel
files VAC
wire.xls
S. A Keys and D. P Hampshire 
A scaling law for the critical current density of
weakly and stronglycoupled superconductors, used to parameterise data from a
technological Nb_{3}Sn strand  Supercond. Sci. Technol. 16
(2003) 10971108
N
R Leigh and D P Hampshire  Deriving the
GinzburgLandau parameter from heat capacity data on magnetic superconductors
with Schottky anomalies. Phys. Rev. B. 68 174508 (2003)
D. M. J. Taylor, P. Foley, H. J. Niu and D. P.
Hampshire  The effect of
axial strain cycling on the critical current density and nvalue of ITER
niobiumtin VAC and EMLMI strands and the detailed characterisation of the
EMLMITFMC strand at 0.7% intrinsic strand (EFDA/02626)
Numerical Data 
Excel files EMLMI wire.xls,
Numerical Data  Excel files
VAC wire.xls
D Wood V Greener and D P Hampshire  Oxygen drips upwards from superconductors. Nature
(brief communications) 415 860 (2002).
D M J Taylor, S A Keys, D P Hampshire  EJ characteristics and nvalues of
a niobiumtin superconducting wire as a function of a magnetic field,
temperature and strain. Physica C 372376 12911294 (2002).
D M J Taylor, S A Keys, D P Hampshire  Reversible and irreversible effects of strain on the
critical current density of a niobiumtin superconducting wire. Cryogenics
42 109112 (2002).
H J Niu and D P Hampshire  Fabrication
of nanocrystalline and amorphous Chevrel phase PbMo_{6}S_{8}
powder by ball milling. Physica C 372 11451147 (2002).
S A Keys and D P Hampshire  Measurement and Interpretation of Electromagnetic
Properties  Characterisation of conductors. Review 42 pages Handbook of
Superconducting Materials, Pub: Institute of Physics, Editors D Cardwell and G
Ginley (2002)
S A Keys,
K Osamura, M Sugano, A Nyilas, H S Shin, H
Weijers, D P Hampshire, N Morley, K Morley, S Keys, M Leghissa, W Herkert, K
Katagiri and T Ogata  The tensile property of commerical
Bi2223 tapes: a report on the international roundrobin test. Super. Sci.
and Technol., 15 888893 (2002).
D. P. Hampshire  The
nonhexagonal fluxline lattice in superconductors. J. Phys. Cond. Mat. 13
60956113 (2001).
A. B. Sneary, C. M. Friend and D. P. Hampshire  Design, fabrication and performance of a 1.29 T
Bi2223 magnet. Super. Sci. and Technol. 14 433443 (2001).
D. P. Hampshire, D. M. J. Taylor, P. Foley and S.
A. Keys  Characterisation
of Nb_{3}Sn and Nb_{3}Al strands for Model Coils (EFDA/00515)
Numerical Data  Excel
files Sumitomo wire.xls,
Numerical Data 
Excel files Furukawa wire.xls,
Numerical Data  Excel
files VAC wire.xls.
N. Cheggour and D. P. Hampshire  A probe for investigating the effects of
temperature, strain, and magnetic field on transport critical currents in
superconducting wires and tapes. Rev. Sci. Instr. 71 45214530
(2000).
I. J. Daniel and D. P. Hampshire  Harmonic calculations and measurements of the
irreversibility field using a vibrating sample magnetometer. Phys. Rev. B.
61 69826993 (2000).
N. Cheggour and D. P. Hampshire  Unifying the strain and temperature scaling laws for
the pinning force density in superconducting niobiumtin multifilamentary
wires. J. Appl Phys. 86 552555 (1999).
H. D. Ramsbottom and D. P. Hampshire  Flux Penetration Measurements and the harmonic
magnetic response of hot isostatically pressed (Pb,Gd)Mo_{6}S_{8}.
J. Appl. Phys. 85 37323739 (1999).
S A Keys and D P Hampshire  The effect of hot isostatic pressing on the strain
tolerance of the critical current density found in modified jelly roll Nb3Sn
wires. IEEE Transactions on Applied Superconductivity 9 1447
(1999).
H. Hamid and D. P. Hampshire  The critical current density of superconductors as a
function of strain in high magnetic fields. Cryogenics 38
10071015 (1998).
N. Cheggour, M. Decroux, O. Fischer and D. P.
Hampshire  Irreversibility Line and Granularity
in Chevrel Phase superconducting wires. J. Appl Phys 84 2181
(1998)..
D. P. Hampshire  A
Barrier to Increasing the Critical Current Density of Bulk Untextured
Polycrystalline Superconductors in High Magnetic Fields Physica C 296
153166 (1998).
D. N. Zheng, S. Ali, H. A. Hamid, C. Eastell, M.
Goringe and D. P. Hampshire  The critical
current of the Chevrel Phase Superconductor LeadMolybdenumSulphur with
Gadolinium Physica C 291 4958 (1997).
H. D. Ramsbottom and D. P. Hampshire  Harmonic Flux Penetration of Superconductors in
Low Frequency, High Amplitude, AC Magnetic Fields. J Phys C. 9
44374453 (1997).
H. D. Ramsbottom and D. P. Hampshire  Improved critical current density and the
irreversibilty line in HIP'ed Chevrel phase superconductor PbMo_{6}S_{8}.
Physica C 274 295303 (1997).
K. Osamura, S. Nonaka, M. Matsui, T. Oku, S.
Ochiai and D. P. Hampshire  Factors suppressing
transport Critical Current in Ag/Bi2223 Tapes. J. Appl. Phys. 79
7877 (1996).
H. D. Ramsbottom, S. Ali and D. P. Hampshire  The response of a new ceramicoxynitride (Cernox)
resistance temperature sensor in high magnetic fields. Cryogenics 36
6163 (1996).
C. M. Friend and D. P. Hampshire  Critical current density of Bi_{2}Sr_{2}Ca_{1}Cu_{2}O_{δ}
monocore and mutifilamentary wires from 4.2K up to T_{c} in high
magnetic fields. Physica C 258 213221 (1996).
C. M. Friend and D. P. Hampshire  Direct evidence for a change at 50K in the
critical current properties of a Bi_{2−x}Pb_{x}Sr_{2}Ca_{2}Cu_{3}O_{δ}
tape in high magnetic fields. Physica C 252 0711695. .
D. N. Zheng, H. D. Ramsbottom, and D. P. Hampshire
 Reversible and irreversible magnetisation of
the Chevrel phase superconductor PbMo_{6}S_{8}. Phys Rev B 52
1293112938 (1995). .
C. M. Friend and D. P. Hampshire  Anomalous behaviour in the critical current
density of a (Bi_{2−x}Pb_{x) }Sr_{2}Ca_{2}Cu_{3}O_{δ}
tape below 10K. J. Phys. Cond. Mat.ond. Mat. 7 77097715 (1995). .
H. D. Ramsbottom and D. P. Hampshire  A Probe for measuring magnetic field profiles inside
superconductors from 4.2K up to T_{c} in high magnetic fields. J.
Meas. Sci. and Tech. 6 13491355 (1995).
Papers from the archive
D. P. Hampshire J. Seuntjens L D Cooley D C Larbalestier D C. Anomalous Suppression of Transport Critical Current Below B_{C2}(T) in Oriented Sintered Samples of high T_{C} Superconductors. Appl. Phys. Lett., 53 (9), 814, 1988.
D P Hampshire X Cai J Seuntjens D C Larbalestier D C. Improved Critical Current Characteristics in 123 Oxide Superconductors: Weak Flux Pinning and Percolative Aspects. Supercond. Sci. and Techn. 1, 1219, 1988.
D C Larbalestier S E Babcock X Cai M Daeumling D P Hampshire T F Kelly L A LaVanier P J Lee J Seuntjens. Weak Links and the Poor Transport Critical Currents of the 123 Compounds Invited paper to the International Conference on High Temperature Superconductors, Interlaken, Feb 1988, Switzerland, Physica C, 153, 1580, 1988.
D. P. Hampshire and H. Jones  Analysis of the general structure of the EI
characteristic of high current superconductors with particular reference to a
NbTi SRM wire. Cryogenics 27 608616 (1987)
D. P. Hampshire and H. Jones 
An in depth characterisation of a (NbTa)_{3}Sn
filamentary superconductor. IEEE Trans Magn Vol MAG21 No. 2 289292 (1985)