180 citations · 524 across the 12 of their papers we have counts for
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Type-II-like ultrafast demagnetization behavior in NiCo2O4 thin films
Ryunosuke Takahashi, Kaede Yamada, Harjinder Singh +10
Rare-earth-ferrimagnetic oxides are emerging as attractive platforms for investigating ultrafast spin dynamics. Here, we study the photoinduced magnetization dynamics of epitaxial…
Direct observation of cation-dependent polarisation switching dynamics in fluorite ferroelectrics
Kousuke Ooe, Yufan Shen, Kazuki Shitara +4
Fluorite ferroelectrics are exciting candidates for next-generation non-volatile memory devices because their unique ferroelectric mechanism, which arises from unconventional oxyge…
All-optical helicity-dependent switching in NiCoO thin films
Ryunosuke Takahashi, Yann Le Guen, Suguru Nakata +8
All-optical switching (AOS) involves manipulating magnetization using only pulsed laser, presenting a promising approach for next-generation magnetic recording devices. NiCo2O4 (NC…
Stabilization of Ferroelectric Hf0.5Zr0.5O2 Epitaxial Films via Monolayer Reconstruction Driven by Interfacial Redox Reaction
Yufan Shen, Mitsutaka Haruta, I-Ching Lin +3
The binary fluorite oxide Hf0.5Zr0.5O2 tends to grab a significant amount of notice due to the distinct and superior ferroelectricity found in its metastable phase. Stabilizing the…
Optically-induced magnetization switching in NiCo2O4 thin films using ultrafast lasers
Ryunosuke Takahashi, Takuo Ohkochi, Daisuke Kan +2
Recently, all-optical magnetization control has been garnering considerable attention in realizing next-generation ultrafast magnetic information devices. Here, employing a magneto…
Ultrafast demagnetization in NiCo2O4 thin films probed by time-resolved microscopy
Ryunosuke Takahashi, Yoshiki Tani, Hirotaka Abe +5
Using a time-resolved magneto-optical Kerr effect (TR-MOKE) microscope, we observed ultrafast demagnetization of inverse-spinel-type NiCo2O4 (NCO) epitaxial thin films of the inver…