Study of the effect of replacing Sm3+ by divalent cations on the structure and electrical properties of Sm2TiO5

March 30, 2026Solid State IonicsOpen Access

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Key Points

The study investigates how replacing Sm3+ with alkaline earth metals affects the structure and electrical properties of Sm2TiO5.
Synthesized Sm2-xAExTiO5 samples using a combustion method with Ca, Sr, or Mg as dopants.
Conducted impedance measurements to assess conductivity under various atmospheres and temperatures.
Analyzed maximum conductivity and activation energy using Arrhenius plots.
Ca and Sr doped samples displayed increased conductivity compared to undoped Sm2TiO5.
The highest conductivity measured was 4.36 × 10−4 S cm−1 for Sm1.85Ca0.15Ti4.925 at 900 °C.
Activation energy values ranged from 0.94 to 1.38 eV across samples.

Study demonstrates enhanced conductivity in Sm2TiO5 with divalent cation substitution, suggesting improved material properties.

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Chavez-Cardenas et al. (2026) studied this question.

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