PDF

Metastable Ni7B3: A New Paramagnetic Boride from Solution Chemistry, Its Crystal Structure and Magnetic Properties

Hofmann, Kathrin, Kalyon, Nalan

2015ennickelboridemagnetismsolutionchemistry

Abstract

Language:

We trapped an unknown metastable boride by applying low-temperature solution synthesis. Single-phase nickel boride, Ni7B3, was obtained as bulk samples of microcrystalline powders when annealing the amorphous, nanoscale precipitate that is formed in aqueous solution of nickel chloride upon reaction with sodium tetrahydridoborate. Its crystal structure was solved based on a disordered Th7Fe3-type model (hexagonal crystal system, space group P63mc, no. 186, a = 696.836(4) pm, c = 439.402(4) pm), using synchrotron X-ray powder data. Magnetic measurements reveal paramagnetism, which is in accordance with quantum chemical calculations. According to high-temperature X-ray diffraction and differential scanning calorimetry this nickel boride phase has a narrow stability window between 300 °C and 424 °C. It crystallizes at ca. 350 °C, then starts decomposing to form Ni3B and Ni2B above 375 °C, and shows an exothermic effect at 424 °C.

Download

Cite This Work

@article{5e22c768-af5e-4b58-96e1-f1ddda010afe,
  title={Metastable Ni7B3: A New Paramagnetic Boride from Solution Chemistry, Its Crystal Structure and Magnetic Properties},
  author={Hofmann and Kathrin and Kalyon and Nalan},
  year={2015},
  language={en}
}
TY  - JOUR
TI  - Metastable Ni7B3: A New Paramagnetic Boride from Solution Chemistry, Its Crystal Structure and Magnetic Properties
AU  - Hofmann
AU  - Kathrin
AU  - Kalyon
AU  - Nalan
PY  - 2015
LA  - en
ER  -

Similar Items

Extractive Metallurgy 1 Basic Thermodynamics and Kinetics Alain Vignes(auth.) ( WeLib.org )

Alain Vignes

This book provides a comprehensive overview of the fundamental principles of extractive metallurgy, with a specific focus on basic thermodynamics and

2026enPDF

10.1007 bf03378099.pdf Burwell, Blair ( WeLib.org )

Blair Burwell

The exhaustion of current vanadium sources and the emergence of new applications are driving the need for innovative methods of extraction. The aim of

2026enPDF

Plant auditing: a powerful tool for improving metallurgical plant performance

Deepak Malhotra

This work discusses the essential components of a rigorous auditing process aimed at enhancing metallurgical plant performance. The objective is to id

2015enPDF

Glossary

This glossary serves as a comprehensive compilation of key terms and concepts related to materials science and chemistry. The objective is to provide

2023enPDF

AN INTRODUCTION TO THE METALLURGY OF STEEL AND ITS ALLOYS

Robert A. Francis

This document serves as a comprehensive introduction to the metallurgy of steel and its alloys, focusing on various aspects of iron and steel manufact

2017enPDF

Literature Review of Hydrometallurgical Recycling of printed Circuit Boards (PCBs)

Hao Cui, Corby G Anderson

This study provides an up-to-date review of recycling of printed circuit boards (PCBs), specifically in hydrometallurgical treatment. Waste printed ci

2016enPDF