Pukyong National University

The physical properties of 'Feroxyhite', a two-dimensional magnetic semiconductor, have been identified
Professor Hong Ji-sang's research team

Professor Hong Ji-sang's research team from Pukyong National University has identified the crystal structure and energy band structure of 'Feroxyhite (δ-FeOOH)', a two-dimensional magnetic material semiconductor. Recently, due to the physical and material limitations of silicon transistor semiconductors, it has been difficult to improve performance such as speed and density, and thus research for development of next-generation semiconductor devices such as spintronic devices have been actively conducted. A spintronic device is a next-generation semiconductor device that uses spin, which means the property of electrons and the quantum mechanical physical quantity. This is a device that uses even the spin state of electrons when current flows, unlike conventional semiconductors that distinguish between 0 and 1 depending on whether electricity flows or not.
The research team found candidate materials for the parent material reported in the existing Feroxyhite study, and then they calculated the magnetic properties, optical properties, and electronic structure of the two-dimensional thin film thicknesses. The team succeeded in first identifying the three physical properties of the Feroxyhite's crystal structure, the energy band structure, and the magnetic state by comparing the results with existing experiments. This research was conducted with the support of the Ministry of Science and ICT (MSIT) and National Research Foundation of Korea (NRF)'s supporting project on basic researches (personal researches). The results of this research have been published in the International Journal of Materials Science, ACS applied materials & interfaces. <기사 보러가기(클릭!)>

18 October 2017

연구진
  홍지상 hongj@pknu.ac.kr
  자연과학대학 나노자성체 이론연구실