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journal article·2020-07Open access

Ultralow Voltage Manipulation of Ferromagnetism

Bhagwati Prasad, Yen‐Lin Huang, Rajesh V. Chopdekar, Zuhuang Chen, James Steffes, Sujit Das, Qian Li, Mengmeng Yang, Chia‐Ching Lin, Tanay Gosavi, Dmitri E. Nikonov, Zi Qiang Qiu, Lane W. Martin, Bryan D Huey, Ian Young, Jorge Íñiguez, Sasikanth Manipatruni, Ramamoorthy Ramesh

Advanced Materials· Volume 32· Issue 28
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Source abstract

Abstract

Abstract Spintronic elements based on spin transfer torque have emerged with potential for on‐chip memory, but they suffer from large energy dissipation due to the large current densities required. In contrast, an electric‐field‐driven magneto‐electric storage element can operate with capacitive displacement charge and potentially reach 1–10 µJ cm−2 switching operation. Here, magneto‐electric switching of a magnetoresistive element is shown, operating at or below 200 mV, with a pathway to get down to 100 mV. A combination of phase detuning is utilized via isovalent La substitution and thickness scaling in multiferroic BiFeO3 to scale the switching energy density to ≈10 µJ cm−2. This work provides a template to achieve attojoule‐class nonvolatile memories.
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Research context

OpenAlex topics: Multiferroics and related materials · Ferroelectric and Piezoelectric Materials · Magnetic and transport properties of perovskites and related materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering University of California Berkeley CA 94720 USA

Materials Sciences Division Lawrence Berkeley Laboratory Berkeley CA 94720 USA

Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 94720 USA

Institute of Materials Science University of Connecticut Storrs CT 06269 USA

Department of Physics University of California Berkeley CA 94720 USA

Exploratory Integrated Circuits Components Research Intel Corp. Hillsboro OR 97124 USA

Materials Research and Technology Department Luxembourg Institute of Science and Technology (LIST) Avenue des Hauts‐Fourneaux 5 Esch‐sur‐Alzette L‐4362 Luxemburg

Physics and Materials Science Research Unit University of Luxembourg 41 Rue du Brill Belvaux L‐4422 Luxembourg

Kepler Computing Hillsboro OR 97124 USA

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