Antiferromagnetism in an oxide semiconducting glass

Physica Status Solidi (B): Basic Research - Tập 45 Số 1 - Trang 323-331 - 1971
E. J. Friebele1,2, L. K. Wilson3,2, Ashley Dozier4,2, D. L. Kinser5,2
1Graduate Student, Electrical Engineering.
2School of Engineering, Vanderbilt University, Nashville, Tennessee
3Associate Professor, Electrical Engineering.
4Graduate Student, Material Science and Engineering.
5Assistant Professor, Material Science and Engineering.

Tóm tắt

AbstractThe magnetic structure of a 55 mol% FeO–45 mol% P2O5 semiconducting glass containing various relative concentrations of Fe3+ and Fe2+ has been studied by ESR techniques over the temperature range −190 to 300 °C. It was determined that the iron ions in the glass matrix are antiferromagnetically coupled in Fe3+–Fe2+ ion pairs. The isolated Fe3+−Fe2+ ion pairs. The isolated Fe3+ ions were found to be in orthorhombic crystalline fields with λ = 1/3 and 0.23 < D < 0.8 cm−1, where D and λ are constants in the spin Hamiltonian. Heat treatment of the glass samples caused precipitation of Fe3+‐rich crystalline phases, and it was determined that the Fe3+ ions in these phases were antiferromagnetically aligned.

Từ khóa


Tài liệu tham khảo

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Thông tin xuất bản

Physica Status Solidi (B): Basic Research

Tập 45 Số 1

323-331

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