Magnetic studies of GaN nanoceramics

TL;DR

This study investigates the magnetic properties of GaN nanoceramics synthesized under high pressure, revealing a Meissner-like diamagnetic response linked to grain deformation, with implications for understanding magnetic behavior in nanostructured materials.

Contribution

It provides new insights into the magnetic behavior of GaN nanoceramics and the influence of grain size and deformation on their magnetic properties.

Findings

GaN nanoceramics exhibit a Meissner-like diamagnetic response.

Stronger grain deformation correlates with increased diamagnetic signal.

Magnetic properties depend on nanocrystalline grain deformation.

Abstract

The synthesis, morphology and magnetization measurements of GaN nanoceramics obtained under high pressure are reported. In particular the effect of grain size on magnetic properties of GaN nanopowders and nanoceramics was investigated. It was found that for the GaN nanoceramic characterized by the stronger deformation of nanocrystalline grains the diamagnetic signal changes with external magnetic field similarly to the Meissner effect in superconductors.