Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2011-09-23
2011 J. Phys.: Conf. Ser. 324 012036
Physics
Condensed Matter
Strongly Correlated Electrons
13 pages, 4 figures, 2 tables
Scientific paper
10.1088/1742-6596/324/1/012036
Magnetic and magnetoelastic properties of terbium titanate pyrochlore in paramagnetic phase are simulated. The magnetic field and temperature dependences of magnetization and forced magnetostriction in Tb2Ti2O7 single crystals and polycrystalline samples are calculated in the framework of exchange charge model of crystal field theory and a mean field approximation. The set of electron-deformation coupling constants has been determined. Variations of elastic constants with temperature and applied magnetic field are discussed. Additional strong softening of the crystal lattice at liquid helium temperatures in the magnetic field directed along the rhombic symmetry axis is predicted.
Kasatkina L. A.
Klekovkina V. V.
Malkin B. Z.
Zakirov A. R.
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