Hall Effect in Single-Crystal Lithium Ferrite

Abstract

Between 170° and 330°K, the Hall mobility of the flux‐grown lithium ferrite single crystal has a maximum at 295.5°K. At 295.5°K, the ordinary Hall coefficient R₀ was found to be +3.26×10² cm³/C, which corresponds to a carrier concentration of 1.92×10¹⁶‐cm⁻³. The extraordinary Hall coefficient R₁′ was 1.9×10² cm³/C. Above 295.5°K, μ_H = 1.39×10⁻²[exp(1.54×10³/T) −1], which indicates a mechanism of optical mode scattering. Below 295.5°K, μ_H = (2.591×10⁵/T) exp(−0.149 eV/KT), which indicates a diffusion mechanism. The majority carriers (p‐type) can be attributed to the Fe²⁺ ions, and the minority carriers (n‐type) to the oxygen vacancies.