Samples of high-purity NbN1-x were prepared by a high temperature technique. Single-crystal studies revealed the twinning of the tetragonal low temperature phase which forms when cubic NbN1-x is cooled from a high temperature. The X-ray diffraction results confirm the previously found structure of tetragonal NbN1-x.
Bibliographical noteFunding Information:
The Ames Laboratory-DOE is operatedf or the U.S. Departmento f Energy by Iowa StateU niversity under Contract No. W-7405-Eng-82. This researchw as supportedb y the Office of Basic Energy Sciences,M aterialsS ciencesD ivision.