|
1
|
Du JL, Fang Y, Fu EG, Ding X, Yu KY, Wang YG, Wang YQ, Baldwin JK, Wang PP, Bai Q. What determines the interfacial configuration of Nb/Al 2O 3 and Nb/MgO interface. Sci Rep 2016; 6:33931. [PMID: 27698458 PMCID: PMC5048433 DOI: 10.1038/srep33931] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2016] [Accepted: 08/25/2016] [Indexed: 12/02/2022] Open
Abstract
Nb films are deposited on single crystal Al2O3 (110) and MgO(111) substrates by e-beam evaporation technique. Structure of Nb films and orientation relationships (ORs) of Nb/Al2O3 and Nb/MgO interface are studied and compared by the combination of experiments and simulations. The experiments show that the Nb films obtain strong (110) texture, and the Nb film on Al2O3(110) substrate shows a higher crystalline quality than that on MgO(111) substrate. First principle calculations show that both the lattice mismatch and the strength of interface bonding play major roles in determining the crystalline perfection of Nb films and ORs between Nb films and single crystal ceramic substrates. The fundamental mechanisms for forming the interfacial configuration in terms of the lattice mismatch and the strength of interface bonding are discussed.
Collapse
Affiliation(s)
- J L Du
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, P. R. China
| | - Y Fang
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - E G Fu
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, P. R. China
| | - X Ding
- State Key Laboratory for Mechanical Behavior of Materials, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
| | - K Y Yu
- Department of Materials Science and Engineering, China University of Petroleum, Beijing 102249, P. R. China
| | - Y G Wang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, P. R. China
| | - Y Q Wang
- Experimental Physical Sciences Directorate, Los Alamos National Laboratory, Los Alamos, NM 87544, USA
| | - J K Baldwin
- Experimental Physical Sciences Directorate, Los Alamos National Laboratory, Los Alamos, NM 87544, USA
| | - P P Wang
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, P. R. China
| | - Q Bai
- State Key Laboratory of Nuclear Physics and Technology, School of Physics, Peking University, Beijing 100871, P. R. China
| |
Collapse
|