Local structure and magnetocaloric effect for La0.7Sr0.3Mn1−xNixO3

► Ni2+ ions replace Mn in the octahedral site of La0.7Sr0.3MnO3. ► TC, magnetization, and magnetic-entropy change decrease with increasing Ni content. ► La0.7Sr0.3Mn1−xNixO3 compounds are suitable for magnetic cooling systems working around room temperature.