There is no strict definition of the term "High Magnetic Field". It has been proposed to use this term for magnetic fields that are technically difficult to generate and therefore need special equipment or large resources. Static fields above 20 T are apparently high magnetic fields in this sense, but in the case of pulsed field 40 T is easy to obtain and any field lower than this approximate limit should not be considered as "high". When a static field is used for materials processing, even 10 T is considered as "high" because the long-term use of a conventional superconducting magnet is difficult. Recently, there has been much technical progress in producing high mag netic fields, both pulsed and static; in large part this is due to the devel opment of new materials. Complicated poly-helix coils are now replaced by simple Bitter coils made with plates of CuAg alloy with high strength and high conductivity; these are used in both water-cooled and hybrid magnets (now up to 45 Tat NHMFL, the US National High Magnetic Field Labora tory at Tallahassee, Florida). By using CuAg wire, a nondestructive pulsed field record of 80 T has been achieved at Osaka University. For daily use in experiments, 70-75 T should soon become available. Major facilities for static high fields worldwide are planning to generate fields over 40 T by increasing the electric power. On the other hand, the use of static high magnetic fields is expanding.
Rezensionen / Stimmen
This book gives a broad survey of some of the most exciting recent applications of high magnetic fields, with the emphasis on materials science...Researchers and students alike will find this book an excellent introduction to, and overview of, current applications of static high magnetic fields.
--Materials World
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ISBN-13
978-3-642-56312-6 (9783642563126)
DOI
10.1007/978-3-642-56312-6
Schweitzer Klassifikation
I General Review of Static High Magnetic Fields.- 1 Static High Magnetic Fields and Materials Science.- II High-Tc Oxide High Field Superconductors.- 2 Vortex Phase Diagram of High-Tc Superconductor YBa2Cu3Oy in High Magnetic Fields.- 3 Magnetic Ordering and Superconductivity in La-based High-Tc Superconductors.- 4 Flux-Pinning Properties for CVD Processed YBa2Cu3O7 Films.- 5 Practical Application of High Temperature Superconductors.- III Conventional High-Field Superconductors.- 6 Highly Strengthened Nb3Sn Superconducting Wires.- 7 Development of Nb3Al Superconductors.- 8 High-Field A15 Superconductors Prepared Via New Routes.- IV Magnetic and Optical Properties in High Fields.- 9 Magnetic Properties of Rare-Earth Monopnictides in High Magnetic Fields.- 10 High-Field Magnetization Process and Crystalline Electric Field Interaction in Rare-Earth Permanent-Magnet Materials.- 11 Study of Covalent Spin Interactions in Cd1?xMnxSe by Cryobaric Magnetophotoluminescence.- V Other High Field Physical Properties.- 12 Magnetic Properties of III?-V Ferromagnetic Semiconductor (Ga,Mn)As.- 13 Transport Properties of the Half-Filled Landau Level in GaAs/AlGaAs Heterostructures: Temperature Dependence of Electrical Conductivity and Magnetoresistance of Composite Fermions.- 14 Novel Electronic States in Low-Dimensional Organic Conductors.- 15 High-Field Successive Phase Transitions of Spin-Density-Wave Organic Conductors ?-(BEDT-TTF)2MHg(XCN)4 [M=K, Rb and NH4 and X=S and Se].- 16 NMR/NQR Studies on Magnetism of Spin Ladder Sr14?xAx Cu24O41(A=Ca and La).- 17 NMR Study of the Tl-Based High-Tc Cuprate Tl(Ba,Sr)2(Y,Ca)Cu2O7 in a Wide Hole Concentration Range from the Antiferromagnetic to the Overdoped Region.- VI Chemistry, Biology and Crystal Growth in High Fields.- 18 MagneticLevitation.- 19 Effects of a Magnetic Field on the Crystallization of Protein.- 20 Magnetoelectrochemistry with a Conducting Polymer.- 21 Highly Oriented Crystal Growth of Bi-Based Oxide High-Tc Superconductors in High Magnetic Fields.- References.
