Orthorhombic Zr₂Co₁₁ phase revisited

Authors

Xingzhong LI, University of Nebraska-LincolnFollow
Wenyong Zhang, University of Nebraska-LincolnFollow
David J. Sellmyer, University of Nebraska-LincolnFollow
X Zhao, US Department of Energy, Iowa State University
M C. Nguyen, US Department of Energy, Iowa State University
C Z. Wang, US Department of Energy, Iowa State University
K M. Ho, US Department of Energy, Iowa State University

Date of this Version

2014

Citation

Journal of Alloys and Compounds 611 (2014)

Comments

U.S. Government work

Abstract

The structure of the orthorhombic Zr₂Co₁₁ phase was revisited in the present work. Selected-area electron diffraction (SAED) and high-resolution electron microscopy (HREM) techniques were used to investigate the structure. They show the orthorhombic Zr₂Co₁₁ phase has a 1-D incommensurate modulated structure. The structure can be approximately described as a B-centered orthorhombic lattice. The lattice parameters of the orthorhombic Zr₂Co₁₁ phase have been determined by a tilt series of SAED patterns. A hexagonal network with a modulation wave has been observed in the HREM image and the hexagonal motif is considered as the basic structural unit.