TABLE OF CONTENTS

CHAPTER 1: Foreword/introduction

CHAPTER 2: Fundamentals of bulk superconducting materials

2.1 Bulk superconductors
2.2 Magnetic
properties of bulk superconductors
2.2.1 Superconducting
material classifications
2.2.1.1 Low- and high-temperature
superconducting materials
2.2.1.2 Type I and II
superconductivity
2.2.1.3 Irreversibility
field
2.2.2 Flux pinning
and field trapping
2.2.3 Flux creep
2.3 Fabrication
processes
2.3.1 Bulk (RE)BCO
superconductors
2.3.2 Bulk MgB2
superconductors
2.3.3 Bulk
iron-pnictide superconductors
2.4 Magnetisation
of bulk superconductors
2.4.1 Pulsed field
magnetisation
2.5 Bulk
superconductor applications
2.5.1 Flux pinning
applications
2.5.1.1 Levitation
2.5.1.2 Magnetic
bearings, flywheel energy storage and superconducting mixers
2.5.2 Flux trapping
applications
2.5.2.1 Magnetic
separation
2.5.2.2 Rotating
machines
2.5.2.3 Portable NMR/MRI
systems
2.5.2.4 Lorentz force
velocimetry
2.5.2.5 Other
applications
2.5.3 Flux shielding
applications
2.5.4 Magnetic lens
2.5.5 Conductor
alternative

CHAPTER 3: Numerical modelling of bulk
superconducting materials

3.1 Modelling of bulk
superconductors
3.1.1 Analytical
techniques
3.1.2 Numerical
techniques
3.2 Finite
element method
3.2.1 Modelling bulk
superconductors using FEM
3.2.1.1 Geometry,
including magnetisation fixture
3.2.1.2 Electromagnetic
formulation
3.2.1.2.1 H-formulation
3.2.1.3 Electrical
properties
3.2.1.3.1 Critical current
density, Jc(B, T)
3.2.1.3.2 E-J
power law
3.2.1.3.3 Electromagnetic
boundary conditions
3.2.1.4 Thermal
properties & electromagnetic-thermal coupling

CHAPTER 4: Modelling magnetisation of bulk
superconductors

4.1 Magnetisation of bulk
superconductors
4.1.1 Zero-field-cooled
(ZFC) & field-cooled (FC) magnetisation
4.1.1.1 Simulation of
ZFC magnetisation
4.1.1.2 Simulation of FC
magnetisation
4.1.1.3 Case study #1:
MgB2 bulks
4.1.1.4 Case study #2:
Iron-pnictide bulks
4.1.2 Pulsed field
magnetisation
4.1.2.1 Basic model
4.1.2.2 Influence of PFM
parameters on trapped fields
4.1.2.3 Case study #3:
PFM of bulk HTS materials using a split coil with an iron yoke

CHAPTER 5: Demagnetisation & novel, hybrid bulk
superconductor structures

5.1 Demagnetisation
effects & AC losses
5.2 Novel &
hybrid bulk superconductor structures
5.2.1 Composite
structures with improved thermal conductivity
5.2.2 Hybrid
ferromagnet-superconductor structures
5.2.3 Hollow bulk
cylinders & tubes for shielding
5.2.4 Hybrid trapped
field magnet lens

APPENDIX A: Thermal properties of bulk superconductors

A.1 Introduction
A.2 Experimental
procedure
A.2.1 Thermal
conductivity
A.2.2 Thermal
dilatation
A.3 Typical
results
A.3.1 Bulk (RE)BCO
A.3.1.1 Thermal
conductivity
A.3.1.2 Thermal
conductivity in magnetic fields
A.3.1.3 Thermal
dilatation
A.3.2 Bulk MgB2
A.3.2.1 Thermal
conductivity
A.3.2.2 Thermal
dilatation

Mark Ainslie is an Engineering and Physical Sciences Research Council (EPSRC) Early Career Fellow in the Bulk Superconductivity Group at the University of Cambridge, UK. His research interests cover a broad range of topics in applied superconductivity in electrical engineering, including superconducting electric machine design, bulk superconductor magnetisation, numerical modelling, and interactions between conventional and superconducting materials.

Hiroyuki Fujishiro is the Vice President/Executive Director of research, revitalization and regional development at Iwate University, Japan. His research interests cover a broad range of topics in applied superconductivity, including experiments on bulk superconductor magnetisation (mainly pulsed field magnetisation and field-cooled magnetisation), and the numerical simulation of electromagnetic, thermal and mechanical behaviours during these magnetising processes.