Effect of Ba substitution on structural, electrical and thermal properties of La0.65Ca0.35−Ba MnO3 (0 ⩽x⩽ 0.25) manganites

Investigation on structural, magneto-transport, magnetic and thermal properties of La0.8Ca0.2−xBaxMnO3 (0⩽x⩽0.2) manganites

“…It is evident from Table 1, that replacing Ca by Ba increases the lattice parameters along with increase in unit cell volume. These results are in good agreement with those reported in literature [20]. …”

“…The details are given elsewhere [20]. In order to determine the structure and to estimate the lattice parameters, X-ray diffraction was done using Rigaku Miniflex diffractometer.…”

“…Micro-hardness of the samples was determined using Vickers indentation technique using Clemex (MMT X7) micro hardness tester. The details of measurement of density and micro-hardness are reported elsewhere [20].…”

“…On the other hand, doping at Ca site by larger ions like Sr, Ba and Pb has been explored by various researchers [16][17][18][19][20][21][22]. The general observation is that partial doping leads to an enhancement in T C .…”

Improving the crystallinity and magnetocaloric effect of the perovskite La0.65Sr0.35MnO3 using microwave irradiation

“…Mn 3+ in LMO is Jahn-Teller active due to its four valence electrons in a high spin state occupying nondegenerate orbitals. 26 As the level of Sr 2+ dopant increases in LSMO, the level of Mn 4+ also increases. Mn 4+ is a non JahnTeller active ion because its three valence electrons occupy degenerate t2g orbitals.…”