The values of R reveal an increasing trend with Ni 2+ substitution. 3.4 Magnetocaloric properties We have shown previously that there is a phase transition around T C .
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Influence of Ni content on structural, magnetocaloric and electrical properties in manganite La<sub>0.6</sub>Ba<sub>0.2</sub>Sr<sub>0.2</sub>Mn<sub>1-<i>x</i></sub> Ni <sub><i>x</i></sub> O<sub>3</sub> (0 ≤ <i>x</i> ≤ 0.1) type perovskites.
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