Many researchers are investigating the possibility of yttrium nitride


Researchers are investigating combining transition metal nitrides with IA nitride semiconductors (aluminum nitride, gallium nitride, and indium nitride) as layered structures or alloys to realize new functional properties. The similar lattice constants and the shared common element (N) have inspired efforts to combine layers as epitaxial films. Scandium nitride and zirconium nitride have been employed as buffer layers between silicon substrates and GaN epitaxial films to block the initiation and propagation of defects. Additions of chromium, magnesium, and iron to AlN and GaN have all been studied in attempts to create a ferromagnetic semiconductor. Yttrium nitride is particularly intriguing because it is one of the few transition metal nitrides that is also a semiconductor (as is scandium nitride). Several groups reported the rocksalt crystal structure for YN with lattice constants between 4.8 and 4.9 Å. No other crystal structure has been experimentally reported for YN. However, a recent first principle calculation compared the wurtzite and bcc structures to the rocksalt structure (the latter was the most stable). Although no measurement has been reported, studies predicted an indirect bandgap for YN of 0.8 eV, 0.85 eV, and 0.544 eV. Yttrium nitride is also predicted to exhibit a high Mn solubility, which could impart good magnetic properties while retaining its semiconductor properties. In the past, only a few studies have reported the synthesis of YN. In the 1950s, a group produced YN powder by first converting yttrium metal to YH2 by reacting with hydrogen at 550 °C in a quartz tube, then heating this gas to 900 °C in nitrogen. Later in the 1960s, YN powders were obtained by reacting yttrium metal with nitrogen at 1400 °C and arc-melting under 0.3 MPa nitrogen. Recently, YN thin films were grown on silicon and sapphire substrates by laser ablation deposition and reactive magnetron sputtering. Although the lattice constants reported from these different material preparation methods are very close, there are still variations. If you are looking for high quality, high purity and cost-effective vanadium hydride, or if you require the latest price of vanadium hydride, please feel free to email contact mis-asia.

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