What question did this study set out to answer?

Investigate the site occupancy, valence states, and magnetic interactions of manganese dopants incorporated into strontium titanate ceramics.

October 26, 2018Journal of Applied Physics

Electronic structure and magnetism of SrTi1-xMnxO3 ceramics

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Authors

NDN. T. Dang PLPhan The Long ДКД. П. Козленко

Discussion

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Overview

Spectroscopic analysis reveals mixed manganese valence states in strontium titanate ceramics, suggesting intrinsic defects enable room-temperature ferromagnetism.

Key Points

Investigate the site occupancy, valence states, and magnetic interactions of manganese dopants incorporated into strontium titanate ceramics.
Synthesized polycrystalline SrTi1-xMnxO3 (x = 0–0.10) ceramics through solid-state reactions.
Characterized structural phases and electronic properties using powder X-ray diffraction, Raman scattering, X-ray absorption, and electron-spin-resonance spectroscopy.
Identified Mn2+ and Mn3+ ions in the lattice, with isolated Mn2+ dominating at x ≤ 0.02 and occupying both octahedral titanium and dodecahedral strontium sites.
Demonstrated that increasing manganese content above x = 0.02 enhances Mn3+ concentrations, induces a secondary tetragonal phase, and amplifies dipolar and magnetic interactions alongside intrinsic defect signals.

Cite This Study

Dang et al. (2018) studied this question.

synapsesocial.com/papers/6a9ab8ec44c3282f559e3f4e https://doi.org/10.1063/1.5050839

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October 26, 2018Journal of Applied Physics

Electronic structure and magnetism of SrTi1-xMnxO3 ceramics

View Full Paper

Ask AI

Bookmark

Authors

NDN. T. Dang PLPhan The Long ДКД. П. Козленко

Discussion

Member takes

Overview

Spectroscopic analysis reveals mixed manganese valence states in strontium titanate ceramics, suggesting intrinsic defects enable room-temperature ferromagnetism.

Key Points

Investigate the site occupancy, valence states, and magnetic interactions of manganese dopants incorporated into strontium titanate ceramics.
Synthesized polycrystalline SrTi1-xMnxO3 (x = 0–0.10) ceramics through solid-state reactions.
Characterized structural phases and electronic properties using powder X-ray diffraction, Raman scattering, X-ray absorption, and electron-spin-resonance spectroscopy.
Identified Mn2+ and Mn3+ ions in the lattice, with isolated Mn2+ dominating at x ≤ 0.02 and occupying both octahedral titanium and dodecahedral strontium sites.
Demonstrated that increasing manganese content above x = 0.02 enhances Mn3+ concentrations, induces a secondary tetragonal phase, and amplifies dipolar and magnetic interactions alongside intrinsic defect signals.

Cite This Study

Dang et al. (2018) studied this question.

synapsesocial.com/papers/6a9ab8ec44c3282f559e3f4e https://doi.org/10.1063/1.5050839

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