nanoribbons


2024-10-04

[News] Chinese Research Team Achieves New Breakthrough in Semiconductor Field

Recently, Professor Xu Xiaohong and Professor Wang Fang from Shanxi Normal University, in collaboration with Researcher Xue Dingjiang from the Institute of Chemistry, Chinese Academy of Sciences, reported a template selection strategy for bottom-up synthesis of CrSbSe₃ nanoribbons.

They successfully achieved the controlled preparation of one-dimensional (1D) ferromagnetic CrSbSe₃ nanoribbons, which exhibit typical semiconductor behavior and ferromagnetism, confirming the intrinsic ferromagnetic properties of 1D CrSbSe₃ semiconductors.

With the rise of cloud computing technology, the scale and complexity of data storage have reached unprecedented levels, placing increasing demands on storage technologies. Magnetic semiconductors, as a new class of spintronic materials, hold the potential to simultaneously enable logic operations, information processing, and storage.

As a result, low-dimensional magnetic semiconductors have become an inevitable trend in the construction of nanoscale spintronic devices, aiming to minimize device size and achieve high-density integration. However, realizing such low-dimensional magnetic semiconductors remains challenging, especially for 1D ferromagnetic semiconductors with higher magnetic anisotropy, larger aspect ratios, and greater potential for nanoscale spintronic devices.

CrSbSe₃, as the only experimentally verified 1D material that possesses both ferromagnetic and semiconductor properties, is of significant importance in exploring its characteristics and applications. Until now, CrSbSe₃ nanocrystals could only be obtained through top-down exfoliation methods.

In response, the team reported a bottom-up solution method for synthesizing CrSbSe₃  nanoribbons. By comparing the formation energies of potential binary templates and ternary target products, they selected Sb2Se₃, a material with a 1D crystal structure, as the template. Half of the Sb atoms in Sb2Se₃ were replaced with Cr atoms, promoting the phase transition from Sb2Se₃ to CrSbSe₃. The synthesized CrSbSe₃ nanoribbons were approximately 5 µm in length, 80 to 120 nm in width, and about 5 nm thick. The nanoribbons exhibited soft magnetic behavior at temperatures below the Curie temperature of 71 K.

Magnetic and electrical tests conducted on individual CrSbSe₃ nanoribbons demonstrated their typical semiconductor behavior and ferromagnetism, further confirming the intrinsic ferromagnetic properties of the 1D CrSbSe₃ semiconductor. This work provides a novel bottom-up template synthesis method for ternary 1D nanoribbons, laying the foundation for the development and application of 1D ferromagnetic semiconductors.

(Photo credit: Shanxi Normal University)

Please note that this article cites information from Shanxi Normal University.

  • Page 1
  • 1 page(s)
  • 1 result(s)

Get in touch with us