Effect of cooling rate on the microstructure and magnetic properties of melt spun Nd–Fe–B alloys

Phase composition, structure and magnetic behaviour of low neodymium rapid-quenched Nd–Fe–B alloys

“…It is known that the phase composition of the studied material is not very simple [13][14][15]. As the every supposed phase is represented by several components in Mössbauer spectrum, the final model of each spectrum is rather complex, including possible surface/interface components as well.…”

NdFeB Permanent Magnets with Various Nd Content

“…Both Mössbauer and X-ray spectra revealed the presence of the magnetically hard Nd 2 Fe 14 B phase in all three materials. In the material with the lowest neodymium concentration it is accompanied predominantly by the magnetically soft Fe 3 B phase, building the well known exchange coupled nanocomposite structure [4,5]. The material near the Nd 2 Fe 14 B stoichiometry contains besides the major phase also some rests of the Nd 1.1 Fe 4 B 4 phase and limited amount of paramagnetic iron, probably in a phase with Zr (X-ray analysis).…”

Structure and phases of low-neodymium NdFeB permanent magnets

“…It is known that the phase composition of the studied material is not very simple [8][9][10]. As the every supposed phase is represented by several components in Mössbauer spectrum, the final model of each spectrum is rather complex, including possible surface/interface components as well.…”