Structural investigations of crystallization processes in amorphous rare earth borates

Crystallization Kinetics Study in Al87Ni10La3 Amorphous Alloy

In this study, the crystallization behavior of melt-spun Al87Ni10La3 amorphous phase was investigated by using X-ray diffraction and non-isothermal differential thermal analysis techniques. The results demonstrated that the amorphous phase exhibited two-stage crystallization on heating, i.e., at first step the amorphous phase transforms into α-Al phase and at second step Al11La3 and Al3Ni inter...

Rare earth separations by selective borate crystallization

Lanthanides possess similar chemical properties rendering their separation from one another a challenge of fundamental chemical and global importance given their incorporation into many advanced technologies. New separation strategies combining green chemistry with low cost and high efficiency remain highly desirable. We demonstrate that the subtle bonding differences among trivalent lanthanide...

Structural Investigations of Amorphous Metals by Nmr

High-pressure Syntheses and Characterization of the Rare Earth Borates RE5(BO3)2F9 (RE=Dy, Ho)

The new rare earth fluoride borates RE5(BO3)2F9 (RE = Ho, Dy) were synthesized under highpressure/high-temperature conditions of 1.5 GPa, 1250 ◦C for Dy5(BO3)2F9 and 2.5 GPa, 1200 ◦C for Ho5(BO3)2F9 in a Walker-type multianvil apparatus from the corresponding rare earth oxides, rare earth fluorides, and boron oxide. The single-crystal structure determinations have revealed that both compounds a...

RE4B4O11F2 (RE = Pr, Nd): Two New Rare-earth Fluoride Borates Isotypic to Gd4B4O11F2

Dedicated to Professor Heinrich Nöth on the occasion of his 85th birthday The rare-earth fluoride borates RE4B4O11F2 (RE = Pr, Nd) were obtained in a Walkertype multianvil device from the corresponding rare-earth oxides and fluorides, and boron oxide. Pr4B4O11F2 was obtained under high-pressure/high-temperature conditions of 8.5 GPa/1150 ◦C, and Nd4B4O11F2 at 8 GPa and 1300 ◦C. The single-cryst...