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

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Hongfei Cheng
  • Nailiang Yang
  • Xiaozhi Liu
  • Yilv Guo
  • Bin Liu
  • Jianhui Yang
  • Ye Chen
  • Bo Chen
  • Qipeng Lu
  • Shijun Yuan
  • Jinlan Wang
  • Lin Gu

Detail(s)

Original languageEnglish
Article number2007140
Journal / PublicationAdvanced Materials
Volume33
Issue number1
Online published26 Nov 2020
Publication statusPublished - 7 Jan 2021

Abstract

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.

Research Area(s)

  • core–shell structures, epitaxial growth, hexagonal phases, magnetic properties, phase engineering

Citation Format(s)

Quasi-Epitaxial Growth of Magnetic Nanostructures on 4H-Au Nanoribbons. / Cheng, Hongfei; 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.

In: Advanced Materials, Vol. 33, No. 1, 2007140, 07.01.2021.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review