Berlin 2024 – wissenschaftliches Programm
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DS: Fachverband Dünne Schichten
DS 20: Poster II
DS 20.30: Poster
Donnerstag, 21. März 2024, 18:00–20:30, Poster D
Room temperature reversible colossal volto-magnetic effect in all-oxide metallic-magnet/topotactic-phase-transition material heterostructures — •Sourav Chowdhury1,3, Supriyo Majumder2,3, Rajan Mishra3, Arup Mandal4,3, Anita Bagri3, Deodatta Phase3, Moritz Hoesch1, Ram Choudhary3, Satish Yadav3, and Suman Karmarkar3 — 1DESY, Hamburg, Germany — 2Northwestern University, IIIinois, USA — 3UGC-DAE CSR, Indore, India — 4IISC, Bengaluru, India
Multiferroic materials have undergone extensive research in the past two decades to produce a sizable room-temperature magneto-electric effect [1]. Here, we developed an innovative way is to tune the functional properties based on the tremendous modulation of electronics and magnetization by the electric field of the topotactic phase transitions (TPT) in heterostructures composed of metallic-magnet/TPT-material. The application of a nominal potential difference of 2-3 Volts induces gigantic changes in magnetization by 100-250% leading to colossal Volto-magnetic effect, which would be tremendously beneficial for low-power consumption applications in spintronics [2,3]. Switching electronics and magnetism by inducing TPT through applying an electric field requires much less energy, making such TPT-based systems promising for energy-efficient memory and logic applications.
[1] G. Catalan et al. Adv. Mater. 2009, 21, 2463, [2] N. A. Spaldin et al. Nat. Mater. 2019, 18, 203, [3] A. Bagri et al. ACS Appl. Mater. Interfaces 2013, 15, 18391.
Keywords: topotactic phase transition; room-temperature magneto-electric coupling; electric control of magnetism; SrCoOx