Phase States and Structural, Jahn–Teller, and Magnetic Transitions in Weakly Doped Lanthanum–Strontium Manganites

Resumo

A phase diagram describing the structural, magnetic, transport, and Jahn–Teller properties and their interrelation as a function of the composition and temperature is constructed using the results from measuring elastic moduli, electrical conductivity, and magnetization for lanthanum–strontium manganites of the form La_1 – xSr_xMnO₃ (0.165 ≤ x ≤ 0.18). Local and cooperative Jahn–Teller distortions of the structural MnO₆ octahedra and their effect on the physical properties of materials are studied.