عنوان

Magnetic Properties of Layered Transition Metal Compounds

(Number (ISBN

9789400918603

(Number (ISBN

9789401073295

Number

b409023

Title Proper

Magnetic Properties of Layered Transition Metal Compounds

General Material Designation

[Book]

First Statement of Responsibility

edited by L. J. Jongh.

Place of Publication, Distribution, etc.

Dordrecht :

Name of Publisher, Distributor, etc.

Springer Netherlands,

Date of Publication, Distribution, etc.

1990.

Series Title

Physics and Chemistry of Meterials with Low-Dimensional Structures,

Volume Designation

9

ISSN of Series

0924-6339 ;

Text of Note

to Low-Dimensional Magnetic Systems -- 1. Experimental realizations of 2-d magnetic systems -- 2. Magnetic model Hamiltonians -- 3. Survey of the predicted magnetic behaviour -- 4. Lattice- and spin-dimensionality crossovers in quasi 2-d magnetic systems -- 5. Magnetic and nonmagnetic impurity doping in quasi 2-d magnets -- References -- Theory of Two-Dimensional Magnets -- 1. Introduction -- 2. Ising magnets -- 2.1. Ising model. Excitations and phase transitions -- 2.2. Onsager solution -- 2.3. Critical exponents and scaling -- 2.4. Dual transformation. Order and disorder -- 3. Planar magnets -- 3.1. XY model -- 3.2. Excitations -- 3.3. Scaling and correlations -- 3.4. Phase transition -- 3.5. Magnetic vortices as a Coulomb gas -- 3.6. Relationships with other models -- 3.7. Planar antiferromagnets -- 4. Heisenberg magnets -- 4.1. Heisenberg model and real magnets -- 4.2. Renormailzation of the temperature -- 4.3. Heisenberg ferromagnets in an external magnetic field -- 4.4. Excitations of the 2-d Heisenberg model -- 4.5. Dipolar interactions -- 5. Experimental layered magnets -- 5.1. Ising layered magnets. ANNNI model: application to CeSb and CeBi -- 5.2. Layered planar magnets -- 5.3. Layered Heisenberg magnets -- 6. Dynamics of 2-d magnets -- 6.1. Equations of motion -- 6.2. Spin-wave dynamics -- 6.3. Spin-diffusion dynamics -- 6.4. Dynamics of localized excitations -- 6.5. Resonant paramagnetic cxcitation of vortex pairs -- 6.6. Summary -- Acknowledgement -- References -- Application of High- and Low-Temperature Series Expansions to Two-Dimensional Magnetic Systems -- 1. Introduction -- 1.1. Series expansions -- 1.2. Methods applied in series analysis -- 1.2.1. Ratio methods -- 1.2.2. Padé approximant methods -- 1.2.3. Other methods of series analysis -- 2. Series expansions and predictions for the 2-d Ising model -- 2.1. Spin 1/2 model with nearest neighbours only (simple 2-d lattices) -- 2.1.1. High-temperature series -- 2.1.2. Low-temperature series -- 2.1.3. Properties in nonzero parallel field -- 2.1.4. Properties in nonzero perpendicular field -- 2.2. Ising model with general S -- 2.3. Other series for I (1/2) -- 2.3.1. Restricted dimensionality systems -- 2.3.2. Further-neighbour interactions -- 2.3.3. Crossover from 2-d to 3-d behaviour -- 3. Series expansions and predictions for the Heisenberg model -- 3.1. Series for S = 1/2, arbitrary S and S = ? -- 3.1.1. Properties at nonzero field -- 3.2. Other series for the Heisenberg model -- 3.2.1. Restricted dimensionality -- 3.2.2. Further-neighbour interactions -- 3.2.3. Crossover from 2-d to 3-d behaviour -- 4. Series expansion in the X Y and Ising-Heisenberg models -- 4.1. Series for the 2-d XY model -- 4.2. Series for the 2-d Ising-Heisenberg model -- 5. Applications to magnetic systems -- 5.1. Ising model -- 5.2. Heisenberg model -- 5.2.1. Spin 1/2 -- 5.2.2. Spin 1 -- 5.2.3. Spin 3/2 and spin 2 -- 5.2.4. Spin 5/2 -- 5.2.5. Restricted dimensionality -- 5.3. XY and Ising-Heisenberg models -- Acknowledgements -- References -- Spin Waves in Two-Dimensional Magnetic Systems: Theory and Applications -- 1. Introduction -- 2. Magnetic structures and spin Hamiltonians -- 3. Spin wave theory of model systems -- 4. Dispersion relation -- 5. Thermodynamic properties -- 6. Impurities in antiferromagnets -- References -- Neutron Scattering Experiments on Two-Dimensional Heisenberg and Ising Magnets -- 1. Introduction -- 2. 2-d systems with Ising and Heisenberg interactions -- 2.1. K2CoF4: a 2-d Ising system -- 2.2. K2FeF4: a 2-d planar antiferromagnet -- 2.3. K2MnF4 and K2NiF4: weakly anisotropic Heisenberg magnets -- 2.4. Rb2CrCl4: a planar Heisenberg ferromagnet with small anisotropy -- 2.5. K2CuF4: a planar Heisenberg ferromagnet -- 3. 2-d random magnetic systems -- 3.1. Phase transitions and critical phenomena -- 3.2. Excitations -- 3.3. Random field effects -- 3.4. Relaxation front 2-d to 3-d order -- 3.5. Competing anisotropics and interactions -- 4. Triangular lattice antiferromagnet (TALAF) -- 4.1. Fluctuations -- 4.2. An additional degree of freedom -- 4.3. Perturbation -- 4.4. Quantum effect RbFeCl3 and CsFeCl3 VX2 (X = Cl, Br, I) AMX2 (A = Li, Na, K; M = 3d metal ion; X = O, S, Se) -- References -- Phase Transitions in Quasi Two-Dimensional Planar Magnets -- 1. Introduction -- 2. Phase transition and excitations in the 2-d XY model -- 3. Crystallographic properties of BaM2(X)4)2 compounds -- 4. Magnetic properties of BaNi2(PO4)2 -- 4.1. Static properties -- 4.2. Dynamic properties -- 4.3. Critical properties -- 5. Magnetic properties of BaCo2(AsO4)2 -- 5.1. Static properties -- 5.2. Magnetic phase diagrams -- 5.3. Dynamic properties -- 6. Magnetic properties of BaNi2(AsO4)2 -- 6.1. Static properties -- 6.2. Dynamic properties -- 7. Magnetic properties of BaCo2(PO4)2 -- 8. Other experimental realizations of the 2-d planar model -- 8.1. K2CuF4 -- 8.2. NiCl2 and CoCL2 graphite intercalated compounds NiCl2-GIC CoCl2-GIC -- 9. Concluding remarks -- Acknowledgement -- References -- Spin Dynamics in the Paramagnetic Regime: NMR and EPR in Two-Dimensional Magnets -- 1. Introduction -- 1.1. Dynamics of the 2-spin correlation functions -- 1.2. Nuclear magnetic resonance (NMR) -- 1.3. Electron paramagnetic resonance (EPR) -- 2. General formalism -- 2.1. Diffusion and dimensionality -- 2.2. Cut-off and EPR linewidth -- 3. EPR spectrum -- 3.1. Diffusion of 4-spin correlation functions -- 3.2. Secular contribution D0 -- 3.3. Nonsecular contributions -- 3.4. Satellite line -- 4. Experiments on quasi 2-d Heisenberg magnets -- 4.1. NMR experiments -- 4.2. EPR experiments -- 4.2.1. Angular dependence of linewidth -- 4.2.2. Frequency dependence of magic angle linewidth -- 4.2.3. Dynamic shift -- 4.2.4. Lineshape of the main line -- 4.2.5. Satellite lines at half resonance field -- 5. Critical dynamcis -- 5.1. Critical behaviour of the NMR line -- 5.1.1. Isotropic regime -- 5.1.2. Anisotropic regime -- 5.1.3. Experiments -- 5.2. Critical behaviour of the EPR linewidth -- 5.2.1. Ferromagnets -- 5.2.2. Antiferromagnets -- 5.3. AC susceptibility -- 6. Conclusions -- References -- Field-Induced Phenomena in Two-Dimensional Weakly Anisotropic Heisenberg Antiferromagnets -- 1. Introduction -- 2. Effective, field-dependent anisotropies -- 3. The phase diagram -- 4. Random fields and domain walls (solitons) -- 5. The spin flop transition -- 6. The bicritical point -- 7. Concluding remarks -- Acknowledgements -- References -- Index of Names -- Index of Chemical Compounds -- Index of Subjects.

0

Text of Note

In the last two decades low-dimensional (low-d) physics has matured into a major branch of science. Quite generally we may define a system with restricted dimensionality d as an object that is infinite only in one or two spatial directions (d = 1 and 2). Such a definition comprises isolated single chains or layers, but also fibres and thin layers (films) of varying but finite thickness. Clearly, a multitude of physical phenomena, notably in solid state physics, fall into these categories. As examples, we may mention: - Magnetic chains or layers (thin-film technology). - Metallic films (homogeneous or heterogeneous, crystalline, amorphous or microcristalline, etc.). - I-d or 2-d conductors and superconductors. - Intercalated systems. - 2-d electron gases (electrons on helium, semiconductor interfaces). - Surface layer problems (2-d melting of monolayers of noble gases on a substrate, surface problems in general). - Superfluid films of ~He or 'He. - Polymer physics. - Organic and inorganic chain conductors, superionic conductors. - I-d or 2-d molecular crystals and liquid crystals. - I-d or 2-d ferro- and antiferro electrics.

International Standard Book Number

9789401073295

Title

Springer eBooks

Chemistry, inorganic.

Chemistry, Physical organic.

Physics.

Surfaces (Physics).

Jongh, L. J.

SpringerLink (Online service)

Date of Transaction

20190307155100.0

Electronic name

[Book]

Y