Quasi-Epitaxial Growth of Magnetic Nanostructures on 4H-Au Nanoribbons

Quasi-Epitaxial Growth of Magnetic Nanostructures on 4H-Au Nanoribbons

© 2020 Wiley-VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - 33(2021), 1 vom: 04. Jan., Seite e2007140
1. Verfasser: Cheng, Hongfei (VerfasserIn)
Weitere Verfasser: Yang, Nailiang, Liu, Xiaozhi, Guo, Yilv, Liu, Bin, Yang, Jianhui, Chen, Ye, Chen, Bo, Fan, Zhanxi, Lu, Qipeng, Yuan, Shijun, Wang, Jinlan, Gu, Lin, Zhang, Hua
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2021
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article core-shell structures epitaxial growth hexagonal phases magnetic properties phase engineering
Beschreibung
Zusammenfassung:© 2020 Wiley-VCH GmbH.
Phase engineering of nanomaterials is an effective strategy to tune the physicochemical properties of nanomaterials for various promising applications. Herein, by using the 4H-Au nanoribbons as templates, four novel magnetic nanostructures, namely 4H-Au  14H-Co nanobranches, 4H-Au @ 14H-Co nanoribbons, 4H-Au @ 2H-Co nanoribbons, and 4H-Au @ 2H-Ni nanoribbons, are synthesized based on the quasi-epitaxial growth. Different from the conventional epitaxial growth of metal nanomaterials, the obtained Co and Ni nanostructures possess different crystal phases from the Au template. Due to the large lattice mismatch between Au and the grown metals (i.e., Co and Ni), ordered misfit dislocations are generated at the Co/Au and Ni/Au interfaces. Notably, a new super-structure of Co is formed, denoted as 14H. Both 4H-Au @ 14H-Co nanobranches and nanoribbons are ferromagnetic at room temperature, showing similar Curie temperature. However, their magnetic behaviors exhibit distinct temperature dependence, resulting from the competition between spin and volume fluctuations as well as the unique geometry. This work paves the way to the templated synthesis of nanomaterials with unconventional crystal phases for the exploration of phase-dependent properties
Beschreibung:Date Revised 04.01.2021
published: Print-Electronic
Citation Status PubMed-not-MEDLINE
ISSN:1521-4095
DOI:10.1002/adma.202007140