Kwon, Hee Young Song, Kyung Mee Jeong, Juyoung Lee, Ah-Yeon Park, Seung-Young Kim, Jeehoon Won, Changyeon Min, Byoung-Chul Chang, Hye Jung Choi, Jun Woo 2024-01-19T16:02:40Z 2024-01-19T16:02:40Z 2021-09-02 2020-12 1884-4049 https://pubs.kist.re.kr/handle/201004/117785 The discovery of a thermally stable, high-density magnetic skyrmion phase is a key prerequisite for realizing practical skyrmionic memory devices. In contrast to the typical low-density Neel-type skyrmions observed in technologically viable multilayer systems, with Lorentz transmission electron microscopy, we report the discovery of a high-density homochiral Neel-type skyrmion phase in magnetic multilayer structures that is stable at high temperatures up to 733 K (approximate to 460 degrees C). Micromagnetic simulations reveal that a high-density skyrmion phase can be stabilized at high temperature by deliberately tuning the magnetic anisotropy, magnetic field, and temperature. The existence of the high-density skyrmion phase in a magnetic multilayer system raises the possibility of incorporating chiral Neel-type skyrmions in ultrahigh-density spin memory devices. Moreover, the existence of this phase at high temperature shows its thermal stability, demonstrating the potential for skyrmion devices operating in thermally challenging modern electronic chips. English NATURE RESEARCH High-density Neel-type magnetic skyrmion phase stabilized at high temperature Article 10.1038/s41427-020-00270-z 1 NPG ASIA MATERIALS, v.12, no.1 NPG ASIA MATERIALS 12 1 scie scopus 000603065100003 2-s2.0-85097948734 Materials Science, Multidisciplinary Materials Science Article CURRENT-DRIVEN DYNAMICS CREATION LATTICE Skyrmions Lorentz TEM