Magnetotransport property of layered manganites (La,Sr,Ca)3Mn2O7

Effect of Ca substitution on transport and magnetic properties of double‐layered manganite La1.2Sr1.8Mn2O7

“…The decreasing c/a ratio suggests that the lattice contracts preferably in the c-direction rather than in the a-direction [11]. Furthermore, the lattice contraction on Ca substitution may induce chemical pressure and the distortion of MnO 6 octahedra in the perovskite block increases.…”

Electrical, magnetic and elastic properties of La1.2(Sr1−xCax)1.8Mn2O7 (0.0≤x≤0.4)

“…The lattice constants (a and c) and cell volume (V) are found to decrease with increasing Ca content (Table 1), which is due to the chemical substitution of smaller Ca 2+ ions into larger Sr 2+ sites. The decreasing c/a suggests that the lattice contracts preferably in c-direction rather than in a-direction [17]. The surface morphology and particle size of the samples were observed with SEM (Fig.…”