@article{f03e4ea034cc46c08ab3134489fa07c8,
title = "Coexistence of Low Damping and Strong Magnetoelastic Coupling in Epitaxial Spinel Ferrite Thin Films",
abstract = "Low-loss magnetization dynamics and strong magnetoelastic coupling are generally mutually exclusive properties due to opposing dependencies on spin–orbit interactions. So far, the lack of low-damping, magnetostrictive ferrite films has hindered the development of power-efficient magnetoelectric and acoustic spintronic devices. Here, magnetically soft epitaxial spinel NiZnAl-ferrite thin films with an unusually low Gilbert damping parameter (<3 × 10−3), as well as strong magnetoelastic coupling evidenced by a giant strain-induced anisotropy field (≈1 T) and a sizable magnetostriction coefficient (≈10 ppm), are reported. This exceptional combination of low intrinsic damping and substantial magnetostriction arises from the cation chemistry of NiZnAl-ferrite. At the same time, the coherently strained film structure suppresses extrinsic damping, enables soft magnetic behavior, and generates large easy-plane magnetoelastic anisotropy. These findings provide a foundation for a new class of low-loss, magnetoelastic thin film materials that are promising for spin-mechanical devices.",
keywords = "epitaxy, ferromagnetic resonance, magnetic damping, magnetostriction, spinel ferrite",
author = "Satoru Emori and Gray, {Benjamin A.} and Jeon, {Hyung Min} and Joseph Peoples and Maxwell Schmitt and Krishnamurthy Mahalingam and Madelyn Hill and McConney, {Michael E.} and Gray, {Matthew T.} and Alaan, {Urusa S.} and Bornstein, {Alexander C.} and Padraic Shafer and N'Diaye, {Alpha T.} and Elke Arenholz and Greg Haugstad and Meng, {Keng Yuan} and Fengyuan Yang and Dongyao Li and Sushant Mahat and Cahill, {David G.} and Pallavi Dhagat and Albrecht Jander and Sun, {Nian X.} and Yuri Suzuki and Howe, {Brandon M.}",
note = "Funding Information: S.E. and B.A.G. contributed equally to this work. This material is based upon work supported by the Air Force Office of Scientific Research under Award No. FA9550-15RXCOR198. The work at Stanford University was supported by the Vannevar Bush Faculty Fellowship program sponsored by the Basic Research Office of the Assistant Secretary of Defense for Research and Engineering and funded by the Office of Naval Research through grant N00014-15-1-0045. Part of this work was performed at the Stanford Nano Shared Facilities (SNSF), supported by the National Science Foundation under Award No. ECCS-1542152. The Advanced Light Source was supported by the Director, Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy under Contract No. DE-AC02-05CH11231. The work at the Ohio State University was supported by the National Science Foundation under Grant No. DMR-1507274 (VSM). The work at Oregon State University was partially supported by National Science Foundation Award No. 1414416. S.E. would like to thank Praveen Gowtham and Christoph Klewe for their critical reading of the manuscript.",
year = "2017",
month = sep,
day = "13",
doi = "10.1002/adma.201701130",
language = "English (US)",
volume = "29",
journal = "Advanced Materials",
issn = "0935-9648",
publisher = "Wiley-VCH Verlag",
number = "34",
}