Elastic moduli and thermal properties of La0.83Sr0.17MnO3

The elastic and thermodynamic properties of antiperovskites: MCNi3

“…[26] andǐ s the volume thermal expansion coefficient. For a cubic structure MCNi3 (M = Zr, Cd, Ag, Tc, Mg, Zn), the bulk modulus (B) and the shear modulus (G) are written as…”

“…Recently, we have successfully described the thermodynamic behaviour of manganites [24][25][26][27] and intermetallic diborides [28][29][30][31][32][33]. The major contribution to the pair potential of RIM [34] is due to the longrange (LR) Coulomb attraction, which is counterbalanced by the short-range (SR) overlap repulsion having their origin in the Pauli exclusion principle.…”

Specific heat of rare earth cobaltates RCoO3 (R=La, Pr and Nd)

“…We have formulated the rigid ion model (RIM) [23] by incorporating the effects of the long-range (LR) Coulomb attraction, the short-range (SR) Hafemeister-Flygare (HF) [24] type overlap repulsion effective up to the second neighbour atoms. The formalism of RIM is derived from the following interatomic interaction potential [25][26][27][28] is given as:…”

Effect of cation doping on low-temperature specific heat of LaMnO3 manganite

“…We have formulated the RIM [7][8][9][10][11] by keeping the attractive long-range (LR) Coulomb and the short-range (SR) HafemeisterFlygare-type (HF) [12] overlap repulsive interactions extended up to the next nearest neighbour. The potential describing the formalism of RIM is expressed as…”

“…This report motivated us to formulate Rigid Ion Model (RIM) to describe the thermal properties of La 1Àx Ca x MnO 3 compounds. Earlier we have used the RIM model successfully to study the thermal properties of some perovskite manganites and other inorganic compounds over a fairly wide range of temperatures [5][6][7][8][9]. As the electronic and magnetic phase diagram of La 1Àx Ca x MnO 3 is well established for all the values of concentration (x) [10], the main focus of the present paper is to explore temperature dependence of the lattice specific heat of La 1Àx Ca x MnO 3 in different regions of its phase diagram (x ¼ 0.125, 0.175, 0.25, 0.35, 0.50, 0.67 and 0.75).…”