PH6003: Magnetism in Materials

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Course Information

L-T-P-C3-0-0-3
Prerequisites PH5009

Syllabus

Module 1: Review of Isolated Magnetic Moment

Lecture hours: 4 · Tutorial hours: 0 · Lab hours: 0

Diamagnetism, paramagnetism, Hund's coupling, Spin-orbit coupling, Quantum mechanics of Pauli spin matrices .

Module 2: Environment around Isolated Magnetic Moment

Lecture hours: 2 · Tutorial hours: 0 · Lab hours: 0

Crystal electric field, Jahn-Teller effect .

Module 3: Magnetic Interactions and Anisotropy

Lecture hours: 6 · Tutorial hours: 0 · Lab hours: 0

Magnetic interactions: dipolar; exchange interactions - direct, indirect exchanges (superexchange, RKKY exchange), Magnetic anisotropy: single ion (magneto-crystalline), magnetic exchange anisotropy .

Module 4: Magnetic Ordering and Excitation

Lecture hours: 11 · Tutorial hours: 0 · Lab hours: 0

Magnetic ordering: ferromagnetism, antiferromagnetism, ferrimagnetism, Non-collinear and non-coplanar order: application of mean field theory, Magnetic excitation: spin-wave theory and magnon .

Module 5: Magnetic Measurement Techniques

Lecture hours: 5 · Tutorial hours: 0 · Lab hours: 0

Vibrating sample and SQUID magnetometers, Neutron scattering, Magnetic resonance spectroscopy, Muon spin resonance .

Module 6: Magnetic Materials

Lecture hours: 14 · Tutorial hours: 0 · Lab hours: 0

Magnetism in metals/alloys: band magnetism, Stoner criterion, spin-density wave, Magnetoresistance in metals: GMR, CMR, Kondo effect, heavy fermion, Magnetism in insulators: Mott-Hubbard transition, low dimensional magnetism, magnetic frustration, Spintronics: spin-polarized current - spin-injection, spin accumulation, spin-transfer torque, Materials for spintronics, magnetic memory .

Study Materials

Textbooks

  1. Magnetism in Condensed Matter, Stephen Blundell, Oxford Master Series in Condensed Matter Physics, ISBN: 978-0198505914
  2. Magnetism and Magnetic Materials, J. M. D. Coey, Cambridge University Press, ISBN: 978-0-521-81614-4

References

  1. Lecture Notes on Electron Correlation and Magnetism, Patrik Fazekas, World Scientific, ISBN: 978-981-02-2474-5
  2. Physics of Transition Metal Oxides, S. Maekawa, T. Tohyama, S. E. Barnes, S. Ishihara, W. Koshibae, G. Khaliullin, Springer, Berlin, ISBN: 81-203-1601-0
  3. Physics of Magnetism and Magnetic Materials, K. H. J. Buschow and F. R. de Boer, Springer, Boston, MA, ISBN: 978-0-306-47421-7
  4. Introduction to Magnetic Materials, B. D. Cullity and C. D. Graham Jr., Wiley (2008), ISBN: 9780471477419