Role of scaffold network in controlling strain and functionalities of nanocomposite films

Aiping Chen, Jia Mian Hu, Ping Lu, Tiannan Yang, Wenrui Zhang, Leigang Li, Towfiq Ahmed, Erik Enriquez, Marcus Weigand, Qing Su, Haiyan Wang, Jian Xin Zhu, Judith L. MacManus-Driscoll, Long Qing Chen, Dmitry Yarotski, Quanxi Jia

Research output: Contribution to journalArticlepeer-review

71 Scopus citations


Strain is a novel approach to manipulating functionalities in correlated complex oxides. However, significant epitaxial strain can only be achieved in ultrathin layers. We show that, under direct lattice matching framework, large and uniform vertical strain up to 2% can be achieved to significantly modify the magnetic anisotropy, magnetism, and magnetotransport properties in heteroepitaxial nanoscaffold films, over a few hundred nanometers in thickness. Comprehensive designing principles of large vertical strain have been proposed. Phasefield simulations not only reveal the strain distribution but also suggest that the ultimate strain is related to the vertical interfacial area and interfacial dislocation density. By changing the nanoscaffold density and dimension, the strain and the magnetic properties can be tuned. The established correlation among the vertical interfacestrainproperties in nanoscaffold films can consequently be used to tune other functionalities in a broad range of complex oxide films far beyond critical thickness.

Original languageEnglish (US)
Article numbere1600245
JournalScience Advances
Issue number6
StatePublished - Jun 2016

All Science Journal Classification (ASJC) codes

  • General


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