Self-assembled magnetic heterostructure of Co/DLC films

Yu Ting Chow, Pei Cheng Jiang, Cheng Hsun Tony Chang*, Tien Szu Shen, Yih Shing Lee, Jyh Shen Tsay, Chii Ruey Lin

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

In order to adapt to the quick and large amount of necessity in data flow for 5G cloud generation, it is necessary to develop a technology of warm storage device in market which takes a great balance between the reading/writing performance and the price per storage capacity. The technologies of warm storage devices are assumed to adopt phase change memory (PCM), resistive random access memory or magnetoresistive random access memory which have the highest possibilities to 5G structures and magnetic properties of Co on non-hydrogenated diamond like carbon (DLC)/Si(100) films and Co/DLC interface are investigated. The self-assembled magnetic heterostructure is firstly reported in hexagonal close packing Co layers perpendicular magnetic anisotropy (PMA) on Co carbide layers (in-plane) during Co deposited on DLC/Si(100). A PMA/in-plane magnetic heterostructure is expected to have the highest switching current to the energy barrier ratio of near 4 in previous report, which has great potential for developing warm memory devices. Based on these unique characteristics, we provide a novel design called magnetic anisotropy-phase change memory (Mani-PCM) which can impact the developing blueprint of memory. The working process of Mani-PCM includes in set, reset and read states as a universal PCM. This brand new technology is highly promising as warm memory devices including high reading/writing performance and economical price per storage capacity.

Original languageEnglish
Article number495709
JournalNanotechnology
Volume32
Issue number49
DOIs
Publication statusPublished - 2021 Dec 3

Keywords

  • magnetic heterostructure
  • non-hydrogenated diamond like carbon (DLC)
  • perpendicular magnetic anisotropy (PMA)
  • PMA/in-plane interface
  • self-assembled

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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