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Modulación eléctrica no volátil del proceso de conmutación de la magnetización en películas delgadas patronizadas
Hao Zhou1,2, Zhe Zhang1,2, XingYu Hou1,2
1Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang, China.
Small (Weinheim an der Bergstrasse, Germany)
|February 10, 2026
Resumen
La estructura de fabricación tiene un impacto significativo en la conmutación de magnetización en las películas de óxido de estroncio y rutenio (SrRuO3). Los efectos geométricos y el sesgo eléctrico permiten la conmutación magnética controlada por voltaje para aplicaciones avanzadas de memoria.
Área de la Ciencia:
- Ciencia de los materiales Ciencia de los materiales.
- Física de la materia condensada Física de la materia condensada
- Nanotecnología La nanotecnología es la nanotecnología.
Sus antecedentes:
- La conmutación de magnetización es crucial para los dispositivos espintrónicos de alta densidad, ultrarrápidos y no volátiles.
- Estudios anteriores se centraron en los efectos interfaciales o de espesor, dejando los impactos de la estructura de fabricación poco explorados.
Objetivo del estudio:
- Investigar los efectos geométricos y de frontera en el magnetotransporte en películas de óxido de estroncio y rutenio (SRO) con patrones.
- Explorar la modulación eléctrica no volátil de la magnetización en películas SRO multiferroicas.
Principales métodos:
- Procesamiento avanzado a micro/nanoscala para la fabricación de películas SRO con patrones.
- Simulaciones micromagnéticas para validar las observaciones experimentales.
- Mediciones eléctricas de magnetorresistencia (MR) y modulación de campo coercitivo.
Principales resultados:
- La miniaturización del canal a 1 micrómetro aumentó el campo de saturación de 9 a 32,5 kOe.
- Anisotropía magnética de borde inducida por conmutación de magnetización en varios pasos.
- Intercambio magnético controlado por voltaje observado en películas SRO de 2.6 nm, alterando el campo coercitivo en ±9 V.
Conclusiones:
- Los efectos geométricos y de límites influyen significativamente en la conmutación de la magnetización en las películas SRO.
- La modulación eléctrica de la magnetización es posible en SRO multiferroico, impulsado por la polarización ferroeléctrica y el antiferromagnetismo.
- Este mecanismo de conmutación controlado por voltaje es prometedor para la memoria de varios estados y las sinapsis artificiales.
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