標題: Tuning Phase Stability of Complex Oxide Nanocrystals via Conjugation
作者: Kuo, Ho-Hung
Chen, Lei
Ji, Yanzhou
Liu, Heng-Jui
Chen, Long-Qing
Chu, Ying-Hao
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Complex oxide;nanocrystal;heteroconjugation;strain engineering BiFeO3
公開日期: 1-六月-2014
摘要: Nanocrystals (NCs) attract tremendous research interests because of their unique properties to meet the demands of functionalities. To date, hybrid NCs with multiple components are developed to meet the rising demands that could be very difficult, or even impossible to be achieved by single-component NCs. Tuning properties by strain via conjugation could be an alternative solution. Strain engineering has been discovered and widely applied to many thin-film materials for tuning physical properties. Then, there is a further question to be addressed in this study: can we take the advantages we have learned in heteroepitaxy of thin films and transfer that into the NC conjugation? In order to demonstrate this possibility, we investigated NC conjugation of BiFeO3 and LaAlO3. We found that change in either LaAlO3-NC or BiFeO3-NC size would change the stability of rhombohedral-to-tetragonal phase transition. The present results show that strain engineering is possible to be realized in not only thin film but also NC conjugation. The same concept should be applicable to other complex oxide systems in order to broaden their practical applications for the rising demands of multifunctionalities.
URI: http://dx.doi.org/10.1021/nl500744h
http://hdl.handle.net/11536/24694
ISSN: 1530-6984
DOI: 10.1021/nl500744h
期刊: NANO LETTERS
Volume: 14
Issue: 6
起始頁: 3314
結束頁: 3320
顯示於類別:期刊論文


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