A study of the physical properties of single crystalline Fe5B2P

TL;DR

This paper reports the growth, structural, and magnetic characterization of single crystalline Fe5B2P, revealing its high Curie temperature, significant anisotropy, and magnetic properties consistent with first-principles calculations.

Contribution

It provides the first detailed study of Fe5B2P's magnetic anisotropy and saturation magnetization, combining experimental measurements with theoretical calculations.

Findings

Curie temperature of 655K determined

Anisotropy constant K1 reaches ~0.50 MJ/m3 at 2K

Saturation magnetization exceeds that of hard ferrites

Abstract

Single crystals of Fe5B2P were grown by self-flux growth technique. Structural and magnetic properties are studied. The Curie temperature of Fe5B2P is determined to be 655$pm$2K. The saturation magnetization is determined to be 1.72 MuB/Fe at 2K. The temperature variation of the anisotropy constant K1 is determined for the first time, reaching ~0.50 MJ/m3 at 2K, and it is comparable to that of hard ferrites. The saturation magnetization is found to be larger than the hard ferrites. The first principle calculations of saturation magnetization and anisotropy constant are found to be consistent with the experimental results.