Huang, Mantao Hasan, Muhammad Usama Klyukin, Konstantin Zhang, Delin Lyu, Deyuan Gargiani, Pierluigi Valvidares, Manuel Sheffels, Sara Churikova, Alexandra Buettner, Felix Zehner, Jonas Caretta, Lucas Lee, Ki-Young Chang, Joonyeon Wang, Jian-Ping Leistner, Karin Yildiz, Bilge Beach, Geoffrey S. D. 2024-01-19T14:01:33Z 2024-01-19T14:01:33Z 2021-10-21 2021-09 1748-3387 https://pubs.kist.re.kr/handle/201004/116538 Voltage control of magnetic order is desirable for spintronic device applications, but 180 degrees magnetization switching is not straightforward because electric fields do not break time-reversal symmetry. Ferrimagnets are promising candidates for 180 degrees switching owing to a multi-sublattice configuration with opposing magnetic moments of different magnitudes. In this study we used solid-state hydrogen gating to control the ferrimagnetic order in rare earth-transition metal thin films dynamically. Electric field-induced hydrogen loading/unloading in GdCo can shift the magnetic compensation temperature by more than 100 K, which enables control of the dominant magnetic sublattice. X-ray magnetic circular dichroism measurements and ab initio calculations indicate that the magnetization control originates from the weakening of antiferromagnetic exchange coupling that reduces the magnetization of Gd more than that of Co upon hydrogenation. We observed reversible, gate voltage-induced net magnetization switching and full 180 degrees Neel vector reversal in the absence of external magnetic fields. Furthermore, we generated ferrimagnetic spin textures, such as chiral domain walls and skyrmions, in racetrack devices through hydrogen gating. With gating times as short as 50 mu s and endurance of more than 10,000 cycles, our method provides a powerful means to tune ferrimagnetic spin textures and dynamics, with broad applicability in the rapidly emerging field of ferrimagnetic spintronics. Voltage control of magnetic order is one of the keys to energy-efficient spintronic applications. Voltage gating using a solid-state hydrogen pump now allows for reversible control of ferrimagnetic order, external-field-free 180 degrees magnetic switching and ferrimagnetic spin texture writing. English Nature Publishing Group Voltage control of ferrimagnetic order and voltage-assisted writing of ferrimagnetic spin textures Article 10.1038/s41565-021-00940-1 1 Nature Nanotechnology, v.16, no.9, pp.981 - 988 Nature Nanotechnology 16 9 981 988 N scie scopus 000679273100002 2-s2.0-85111688618 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article; Early Access MAGNETIC-PROPERTIES TEMPERATURE ALLOYS FILMS IRON GDCO