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Title: Stabilization of orthorhombic phase in single-crystal ZnSnN2 films

Here, we report on the crystal structure of epitaxial ZnSnN2 films synthesized via plasma-assisted vapor deposition on (111) yttria stabilized zirconia (YSZ) and (001) lithium gallate (LiGaO2) substrates. X-ray diffraction measurements performed on ZnSnN2 films deposited on LiGaO2 substrates show evidence of single-crystal, phase-pure orthorhombic structure in the Pn21a symmetry [space group (33)], with lattice parameters in good agreement with theoretically predicted values. This Pn21a symmetry is imposed on the ZnSnN2 films by the LiGaO2 substrate, which also has orthorhombic symmetry. A structural change from the wurtzite phase to the orthorhombic phase in films grown at high substrate temperatures ~550°C and low values of nitrogen flux ~10–5 Torr is observed in ZnSnN2 films deposited on YSZ characterized by lattice contraction in the basal plane and a 5.7% expansion of the out-of-plane lattice parameter.
Authors:
ORCiD logo [1] ;  [2] ;  [3] ;  [4] ;  [1] ; ORCiD logo [1] ;  [1] ; ORCiD logo [1] ;  [1] ;  [3]
  1. Univ. of Michigan, Ann Arbor, MI (United States)
  2. Univ. at Buffalo, Buffalo, NY (United States); Institut Jean Lamour (Univ. of Lorraine) (France)
  3. Western Michigan Univ., Kalamazoo MI (United States)
  4. Univ. of Michigan, Ann Arbor, MI (United States); Univ. of California, Los Angeles, CA (United States)
Publication Date:
Grant/Contract Number:
AC02-05CH11231; AC02-06CH11357; FG02-94ER14466
Type:
Published Article
Journal Name:
AIP Advances
Additional Journal Information:
Journal Volume: 6; Journal Issue: 7; Journal ID: ISSN 2158-3226
Publisher:
American Institute of Physics (AIP)
Research Org:
Argonne National Lab. (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org:
National Science Foundation (NSF); USDOE
Country of Publication:
United States
Language:
ENGLISH
Subject:
36 MATERIALS SCIENCE
OSTI Identifier:
1272652
Alternate Identifier(s):
OSTI ID: 1306610