Directed Self-Assembly of Epitaxial CoFe2O4鈥揃iFeO3 Multiferroic Nanocomposites

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• 作者：Ryan Comes ; Hongxue Liu ; Mikhail Khokhlov ; Richard Kasica ; Jiwei Lu ; Stuart A. Wolf
• 刊名：Nano Letters
• 出版年：2012
• 出版时间：May 9, 2012
• 年：2012
• 卷：12
• 期：5
• 页码：2367-2373
• 全文大小：501K
• 年卷期：v.12,no.5(May 9, 2012)
• ISSN：1530-6992

文摘

CoFe₂O₄ (CFO)鈥揃iFeO₃ (BFO) nanocomposites are an intriguing option for future memory and logic technologies due to the magnetoelectric properties of the system. However, these nanocomposites form with CFO pillars randomly located within a BFO matrix, making implementation in devices difficult. To overcome this, we present a technique to produce patterned nanocomposites through self-assembly. CFO islands are patterned on Nb-doped SrTiO₃ to direct the self-assembly of epitaxial CFO鈥揃FO nanocomposites, producing square arrays of CFO pillars.

Keywords:

Directed self-assembly; multiferroics; nanocomposites; e-beam lithography; BiFeO₃; CoFe₂O₄