释放薄膜异质结构中磁电耦合的全部潜力。

Unleashing the Full Potential of Magnetoelectric Coupling in Film Heterostructures.

机构信息

Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 34141, South Korea.

Functional Ceramics Group, Korea Institute of Materials Science (KIMS), Changwon, 51508, South Korea.

出版信息

Adv Mater. 2017 Mar;29(10). doi: 10.1002/adma.201605688. Epub 2017 Jan 9.

DOI:10.1002/adma.201605688

PMID:28067958

Abstract

A record-high, near-theoretical intrinsic magnetoelectric (ME) coupling of 7 V cm Oe is achieved in a heterostructure of piezoelectric Pb(Zr,Ti)O (PZT) film deposited on magnetostrictive Metglas (FeBSi). The anchor-like, nanostructured interface between PZT and Metglas, improved crystallinity of PZT by laser annealing, and optimum volume of crystalline PZT are found to be the key factors in realizing such a giant strain-mediated ME coupling.

摘要

在压电 Pb(Zr,Ti)O（PZT）薄膜沉积在磁致伸缩 Metglas（FeBSi）上的异质结构中，实现了高达 7 V cm Oe 的创纪录、近乎理论的本征磁电（ME）耦合。PZT 和 Metglas 之间的锚状纳米结构界面、激光退火改善的 PZT 结晶度以及最佳体积的结晶 PZT 被发现是实现这种巨大应变介导的 ME 耦合的关键因素。