**[Cr:4, Lc:3, Tt:0, Lb:0]**

This course gives a broad overview of magnetism, magnetic behaviour of
range of modern inorganic complexes.
It will further discuss the concepts of different molecular magnetism
and their recent development, and the computational techniques that
are used to probe the magnetic properties of metal complexes.

- Introduction and basic concepts of Magnetism: Definition, Units and Origin of magnetism, Instrumentation (VSM, SQUID), Experimental Measurement of Magnetic Susceptibility () and Magnetisation Isothermal (M), Classes of Magnetism- Diamagnetism- Paramagnetism, Classes of Paramagnetism, Zeeman effect, Temperature dependence of , The Curie Law and the Curie-Weiss Law, Calculating magnetic susceptibilities by Van Vleck equation.
- Magnetic moments and Ground state terms: Magnetic moments of first row transition metal ions and their orbital contribution to the magnetic moment, High spin octahedral transition metal complexes and their magnetic properties with A and E ground terms, Orbital contribution in f-block elements and the magnetic properties of f-block coordination complexes.
- Spin-Hamiltonian parameters and related concepts: Spin-orbit coupling, Magnetic Anisotropy (), Sources of magnetic anisotropy, Zero field splitting (ZFS;D) - Quantitative approach to ZFS, EPR in magnetism and interpreting the anisotropy of hyperfine interactions, Magnetic interaction () - Types of magnetic interaction with examples, Spin Hamiltonian- Exchange coupling, The theory of ferro-antiferromagnetism, Bleaney-Bowers Equation and their applications to the mechanism of exchange interaction, Magnetic interaction in dinuclear, trinuclear and polynuclear clusters and their examples: Cluster spin states, Spin-frustration, Quantum size effects, Magneto-Structural Correlations, Soft and hard magnetic materials.
- Concepts of Molecular nanomagnets: Introduction to Single Molecule magnets (SMMs) and related applications: Interpretation of Spin-Hamiltonian parameters (J, g & D) that decide the SMM behaviour of a metal complex, Measurement of Hysteresis loop and AC Susceptibility, the theory of Quantum tunnelling of the Magnetisation (QTM) and Transverse anisotropy.
- Introduction to Spin-Crossover (SCO): The theory of SCO behaviour, theory of LIESST effect in SCO compounds and their applications.
- Introduction to Single-Molecule Toroics (SMTs): Cyclic Dy 3 , Dy 4 and Dy 6 SMTs, the theory of Ferrotoroidic and Antiferrotoroidic ground states and their applications in multiferroic materials.
- Importance of DFT and Ab Initio Calculations in predicting the magnetic behaviour of a metal complex.
- Hands-on training to data analysis: PHI software - a tool used to interpret the measured magnetic data of metal complexes.

- R. L. Carlin, Magnetochemistry, Springer, 1985.
- O. Kahn, Molecular Magnetism, VCH Publishers, 1993.
- R. L. Dutta, A. Syamal, Elements of Magnetochemistry, Affiliated East-West Press, 2004.
- C. Benelli and D. Gatteschi, Introduction to Molecular Magnetism,
Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany, 2015.