The effect of quenching from different temperatures on Bi 0.88 Sb 0.12 alloy

TL;DR

This study investigates how quenching from different temperatures affects the structural, thermal, resistive, and magnetic properties of Bi 0.88 Sb 0.12 alloys, revealing temperature-dependent inhomogeneity and property variations.

Contribution

It provides new insights into the effects of quenching temperature on the microstructure and physical properties of Bi-Sb alloys, highlighting the relationship between processing conditions and material behavior.

Findings

Resistivity shows non-monotonic temperature dependence.

Strain, unit cell volume, and resistivity increase with quenching temperature.

Magnetic susceptibility and band gap are affected by quenching temperature.

Abstract

Structural, thermal, resistive and magnetic properties of melt quenched Bi 0.88 Sb 0.12 alloys are reported. The samples are heated at three different temperatures, followed by rapid quenching in liquid nitrogen. Large temperature difference between liquidus and solidus lines, led to microscopic in-homogeneity in the alloy. The effect of quenching from different temperatures in polycrystalline Bi 0.88 Sb 0.12 alloy has been studied. The parameters such as strain, unit cell volume, and resistivity are found to increase with temperature. Thermal variation of resistivity depicts non monotonic temperature dependence. The total negative susceptibility increases and band gap of semiconducting Bi 0.88 Sb 0.12 samples decreases with increasing temperature.