Investigation of Structural and Electrical Properties of 90%La0.67Pb0.33MnO3 + 10%A and 90%La0.67Pb0.33CoO3 + 10%A (A= MnO2, NiO, SnO2 and Cu2O) Composite Materials

Barış Altan; Ece Naz Özgün; Esra Nur Bakay

doi:10.5281/zenodo.18063772

Authors

Barış Altan Muğla Sıtkı Koçman Üniversitesi https://orcid.org/0000-0002-9939-1253
Ece Naz Özgün Muğla Sıtkı Koçman University https://orcid.org/0009-0000-7085-6267
Esra Nur Bakay Muğla Sıtkı Koçman University https://orcid.org/0009-0006-4862-7971

DOI:

https://doi.org/10.5281/zenodo.18063772

Keywords:

TIM, Magnetic Cooling, Perovskite Magnanites, XRD, SEM, Composites

Abstract

In this study, the crystal structures, surface morphologies and electrical conductivity of composite materials, La_0.67Pb_0.33MnO₃, La_0.67Pb_0.33CoO₃ compounds and 90%La_0.67Pb_0.33MnO₃ + 10%A and 90%La_0.67Pb_0.33CoO₃ + 10%A (A= MnO₂, NiO, SnO₂ and Cu₂O), were investigated. As a result of the (X Ray Diffraction) XRD analysis, it was found that all materials have trigonal crystal symmetry (R ̅3c) . The refinements have demonstrated that MnO₂, NiO, SnO₂, and Cu₂O compounds, which are employed in the production of composite materials, are present within both the perovskite crystal structure of these compounds and as a secondary phase in the composite materials. The results from AFM and SEM analyses align with those from XRD refinement. Electrical resistance measurements were conducted to ascertain the metal-insulator phase transition temperatures (T_IM) of various compounds and composite materials. While La_0.67Pb_0.33MnO₃ compound and these compound-based composite materials exhibited a clear T_IM phase transition, no T_IM phase transition was observed in the La_0.67Pb_0.33CoO₃ compound and these compound-based composite materials.

Author Biographies

Barış Altan, Muğla Sıtkı Koçman Üniversitesi

Department of Physics, Faculty of Science, Muğla Sıtkı Koçman University, 48000, Muğla, Türkiye

Ece Naz Özgün, Muğla Sıtkı Koçman University

Department of Chemistry, Faculty of Science, Muğla Sıtkı Koçman University, 48000, Muğla, TÜRKİYE

Esra Nur Bakay, Muğla Sıtkı Koçman University

Department of Chemistry, Faculty of Science, Muğla Sıtkı Koçman University, 48000, Muğla, TÜRKİYE

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