Influence of structural-phase transition on the magnetocaloric effects of lanthanum manganites

Large magnetocaloric entropy change at room temperature in soft ferromagnetic manganites

“…53 Hence, in our case the presence of two peaks in ÀDS M may be attributed to the combination of orthorhombic and rhombohedral structures in this sample. This is in agreement with that observed by Kima et al 54 The obtained ÀDS max M are comparable with those obtained in the literature ( Table 6).…”

Magnetocaloric properties of Cd-substituted perovskite-type manganese oxides

“…However, it may be seen that for most of the various types of lanthanum manganites, viz., La 0.835 Na 0.165 MnO 3 [16], La 0.7 Ca 0.18 Sr 0.12 MnO 3 [17], La 0.65 Sr 0.35 MnO 3 [18], La 0.67 Ca 0.33 MnO 3 [9] reported value for S max m is significantly smaller than that observed in our La 1 − x Cd x MnO 3 (x = 0.5) compounds. Table 1 summarizes the magnetocaloric properties of the present La 1 − x Cd x MnO 3 compounds and the published data on different varieties of doped lanthanum manganites.…”

Effects of Sr Doping Content on the Structure and Morphologies of La_0.7Sr_xCa_0.3-xMnO₃

“…The samples are rhombohedra structure in the range of 0.15 ≤x≤0.3. J. S. Kim et al [13] also discovered the structural transition phenomenon of La 0.7 Sr x Ca 0.3-x MnO 3 with 0.12 ≤x≤0.15 and indicated that the x=0.15 manganite was rhombohedral structure. With the increase of Sr doping content, the diffraction peaks shift towards low angle direction.…”