Manipulation of Exchange Bias Effect via All-Solid-State <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline" overflow="scroll"><mml:mi>Li</mml:mi></mml:math>-Ion Redox Capacitor with Antiferromagnetic Electrode
Zeeshan Mustafa, Pravarthana Dhanapal, Baomin Wang, Huali Yang, Run‐Wei Li
Abstract
The electric field control of the exchange bias has considerable application scope in modern spintronic devices such as magnetic random-access memories. Herein, we utilize an all-solid-state $\mathrm{Li}$-ion redox capacitor with an antiferromagnetic electrode for reversible control of the exchange bias in a $\mathrm{Co}/{\mathrm{Co}}_{3}{\mathrm{O}}_{4}$ heterostructure. The controlled intercalation and deintercalation of Li ions in the antiferromagnetic ${\mathrm{Co}}_{3}{\mathrm{O}}_{4}$ anode via galvanostatic charge and discharge enables reversible and nonvolatile control of the exchange bias. The mechanism of exchange-bias control in the $\mathrm{Co}/{\mathrm{Co}}_{3}{\mathrm{O}}_{4}$ heterostructure is studied using various characterization techniques. This work establishes an approach to control the exchange bias in all-solid-state magnetoionics, which is of great practical importance for the development of modern spintronic devices.