ZnO-ferromagnetic metal vertically aligned nanocomposite thin films for magnetic, optical and acoustic metamaterials

Robynne L. Paldi; Matias Kalaswad; Juanjuan Lu; James P. Barnard; Nicholas A. Richter; Mengwei Si; Nirali A. Bhatt; Peide D. Ye; Raktim Sarma; Aleem Siddiqui; Jijie Huang; Xinghang Zhang; Haiyan Wang

doi:10.1039/d2na00444e

ZnO-ferromagnetic metal vertically aligned nanocomposite thin films for magnetic, optical and acoustic metamaterials

Robynne L. Paldi, Matias Kalaswad, Juanjuan Lu, James P. Barnard, Nicholas A. Richter, Mengwei Si, Nirali A. Bhatt, Peide D. Ye, Raktim Sarma, Aleem Siddiqui, Jijie Huang, Xinghang Zhang, Haiyan Wang

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Magnetoacoustic waves generated in piezoelectric and ferromagnetic coupled nanocomposite films through magnetically driven surface acoustic waves present great promise of loss-less data transmission. In this work, ferromagnetic metals of Ni, Co and Co_xNi_1−x are coupled with a piezoelectric ZnO matrix in a vertically-aligned nanocomposite (VAN) thin film platform. Oxidation was found to occur in the cases of ZnO-Co, forming a ZnO-CoO VAN, while only very minor oxidation was found in the case of ZnO-Ni VAN. An alloy approach of Co_xNi_1−x has been explored to overcome the oxidation during growth. Detailed microstructural analysis reveals limited oxidation of both metals and distinct phase separation between the ZnO and the metallic phases. Highly anisotropic properties including anisotropic ferromagnetic properties and hyperbolic dielectric functions are found in the ZnO-Ni and ZnO-Co_xNi_1−x systems. The magnetic metal-ZnO-based hybrid metamaterials in this report present great potential in coupling of optical, magnetic, and piezoelectric properties towards future magnetoacoustic wave devices.

Original language	English
Pages (from-to)	247-254
Number of pages	8
Journal	Nanoscale Advances
Volume	5
Issue number	1
DOIs	https://doi.org/10.1039/d2na00444e
State	Published - Nov 22 2022
Externally published	Yes

Funding

This work was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under Award DE-SC0020077. R. L. P. acknowledges the support from Purdue Doctoral Fellowship and the Diversity fellowship from Sandia National Laboratory for the research. This work was supported by the Laboratory Directed Research and Development program at Sandia National Laboratories, a multimission laboratory managed and operated by National Technology and Engineering Solutions of Sandia, LLC, a wholly owned subsidiary of Honeywell International, Inc., for the U.S. Department of Energy's National Nuclear Security Administration under contract DE-NA-003525. The paper describes objective technical results and analysis. Any subjective views or opinions that might be expressed in the paper do not necessarily represent the views of the U.S. Department of Energy or the United States Government. N. A. B. acknowledges the support from the Purdue Andrews Fellowship and the Sandia National Laboratory Diversity Initiative Fellowship.

Funders	Funder number
Purdue Andrews Fellowship
Purdue Doctoral Fellowship
U.S. Department of Energy
Office of Science
Basic Energy Sciences	DE-SC0020077
National Nuclear Security Administration	DE-NA-003525
Sandia National Laboratories
Laboratory Directed Research and Development

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title = "ZnO-ferromagnetic metal vertically aligned nanocomposite thin films for magnetic, optical and acoustic metamaterials",

abstract = "Magnetoacoustic waves generated in piezoelectric and ferromagnetic coupled nanocomposite films through magnetically driven surface acoustic waves present great promise of loss-less data transmission. In this work, ferromagnetic metals of Ni, Co and CoxNi1−x are coupled with a piezoelectric ZnO matrix in a vertically-aligned nanocomposite (VAN) thin film platform. Oxidation was found to occur in the cases of ZnO-Co, forming a ZnO-CoO VAN, while only very minor oxidation was found in the case of ZnO-Ni VAN. An alloy approach of CoxNi1−x has been explored to overcome the oxidation during growth. Detailed microstructural analysis reveals limited oxidation of both metals and distinct phase separation between the ZnO and the metallic phases. Highly anisotropic properties including anisotropic ferromagnetic properties and hyperbolic dielectric functions are found in the ZnO-Ni and ZnO-CoxNi1−x systems. The magnetic metal-ZnO-based hybrid metamaterials in this report present great potential in coupling of optical, magnetic, and piezoelectric properties towards future magnetoacoustic wave devices.",

author = "Paldi, {Robynne L.} and Matias Kalaswad and Juanjuan Lu and Barnard, {James P.} and Richter, {Nicholas A.} and Mengwei Si and Bhatt, {Nirali A.} and Ye, {Peide D.} and Raktim Sarma and Aleem Siddiqui and Jijie Huang and Xinghang Zhang and Haiyan Wang",

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doi = "10.1039/d2na00444e",

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T1 - ZnO-ferromagnetic metal vertically aligned nanocomposite thin films for magnetic, optical and acoustic metamaterials

AU - Paldi, Robynne L.

AU - Kalaswad, Matias

AU - Lu, Juanjuan

AU - Barnard, James P.

AU - Richter, Nicholas A.

AU - Si, Mengwei

AU - Bhatt, Nirali A.

AU - Ye, Peide D.

AU - Sarma, Raktim

AU - Siddiqui, Aleem

AU - Huang, Jijie

AU - Zhang, Xinghang

AU - Wang, Haiyan

PY - 2022/11/22

Y1 - 2022/11/22

N2 - Magnetoacoustic waves generated in piezoelectric and ferromagnetic coupled nanocomposite films through magnetically driven surface acoustic waves present great promise of loss-less data transmission. In this work, ferromagnetic metals of Ni, Co and CoxNi1−x are coupled with a piezoelectric ZnO matrix in a vertically-aligned nanocomposite (VAN) thin film platform. Oxidation was found to occur in the cases of ZnO-Co, forming a ZnO-CoO VAN, while only very minor oxidation was found in the case of ZnO-Ni VAN. An alloy approach of CoxNi1−x has been explored to overcome the oxidation during growth. Detailed microstructural analysis reveals limited oxidation of both metals and distinct phase separation between the ZnO and the metallic phases. Highly anisotropic properties including anisotropic ferromagnetic properties and hyperbolic dielectric functions are found in the ZnO-Ni and ZnO-CoxNi1−x systems. The magnetic metal-ZnO-based hybrid metamaterials in this report present great potential in coupling of optical, magnetic, and piezoelectric properties towards future magnetoacoustic wave devices.

AB - Magnetoacoustic waves generated in piezoelectric and ferromagnetic coupled nanocomposite films through magnetically driven surface acoustic waves present great promise of loss-less data transmission. In this work, ferromagnetic metals of Ni, Co and CoxNi1−x are coupled with a piezoelectric ZnO matrix in a vertically-aligned nanocomposite (VAN) thin film platform. Oxidation was found to occur in the cases of ZnO-Co, forming a ZnO-CoO VAN, while only very minor oxidation was found in the case of ZnO-Ni VAN. An alloy approach of CoxNi1−x has been explored to overcome the oxidation during growth. Detailed microstructural analysis reveals limited oxidation of both metals and distinct phase separation between the ZnO and the metallic phases. Highly anisotropic properties including anisotropic ferromagnetic properties and hyperbolic dielectric functions are found in the ZnO-Ni and ZnO-CoxNi1−x systems. The magnetic metal-ZnO-based hybrid metamaterials in this report present great potential in coupling of optical, magnetic, and piezoelectric properties towards future magnetoacoustic wave devices.

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ZnO-ferromagnetic metal vertically aligned nanocomposite thin films for magnetic, optical and acoustic metamaterials

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