High nonlinearity of Ba0.6Sr0.4TiO3 films heteroepitaxially grown on MgO substrates

B. H. Park; Y. Gim; Y. Fan; Q. X. Jia; P. Lu

doi:10.1063/1.1318233

High nonlinearity of Ba_0.6Sr_0.4TiO₃ films heteroepitaxially grown on MgO substrates

B. H. Park
, Y. Gim
, Y. Fan
, Q. X. Jia
, P. Lu

Department of Materials Design and Innovation

Los Alamos National Laboratory
Jet Propulsion Laboratory, California Institute of Technology
New Mexico Institute of Mining and Technology

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

124 Scopus citations

Abstract

We have heteroepitaxially deposited Ba_0.6Sr_0.4TiO₃ (BST) thin films on (001)-oriented MgO substrates using pulsed-laser deposition. By optimizing the deposition temperature and adjusting the film thickness, we have successfully increased the dielectric nonlinearity and decreased the dielectric loss of BST films. BST thin films grown at 750°C with a thickness of 1.1 μm showed a dielectric constant tunability of greater than 65% and a tunability/loss of 43 at a surface electric field of 80 kV/cm at room temperature. X-ray diffraction and transmission electron microscopy analyses indicated that the tunability and dielectric loss were closely related to the crystallinity of the BST films.

Original language	English
Pages (from-to)	2587-2589
Number of pages	3
Journal	Applied Physics Letters
Volume	77
Issue number	16
DOIs	https://doi.org/10.1063/1.1318233
State	Published - Oct 16 2000

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title = "High nonlinearity of Ba0.6Sr0.4TiO3 films heteroepitaxially grown on MgO substrates",

abstract = "We have heteroepitaxially deposited Ba0.6Sr0.4TiO3 (BST) thin films on (001)-oriented MgO substrates using pulsed-laser deposition. By optimizing the deposition temperature and adjusting the film thickness, we have successfully increased the dielectric nonlinearity and decreased the dielectric loss of BST films. BST thin films grown at 750°C with a thickness of 1.1 μm showed a dielectric constant tunability of greater than 65\% and a tunability/loss of 43 at a surface electric field of 80 kV/cm at room temperature. X-ray diffraction and transmission electron microscopy analyses indicated that the tunability and dielectric loss were closely related to the crystallinity of the BST films.",

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year = "2000",

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T1 - High nonlinearity of Ba0.6Sr0.4TiO3 films heteroepitaxially grown on MgO substrates

AU - Park, B. H.

AU - Gim, Y.

AU - Fan, Y.

AU - Jia, Q. X.

AU - Lu, P.

PY - 2000/10/16

Y1 - 2000/10/16

N2 - We have heteroepitaxially deposited Ba0.6Sr0.4TiO3 (BST) thin films on (001)-oriented MgO substrates using pulsed-laser deposition. By optimizing the deposition temperature and adjusting the film thickness, we have successfully increased the dielectric nonlinearity and decreased the dielectric loss of BST films. BST thin films grown at 750°C with a thickness of 1.1 μm showed a dielectric constant tunability of greater than 65% and a tunability/loss of 43 at a surface electric field of 80 kV/cm at room temperature. X-ray diffraction and transmission electron microscopy analyses indicated that the tunability and dielectric loss were closely related to the crystallinity of the BST films.

AB - We have heteroepitaxially deposited Ba0.6Sr0.4TiO3 (BST) thin films on (001)-oriented MgO substrates using pulsed-laser deposition. By optimizing the deposition temperature and adjusting the film thickness, we have successfully increased the dielectric nonlinearity and decreased the dielectric loss of BST films. BST thin films grown at 750°C with a thickness of 1.1 μm showed a dielectric constant tunability of greater than 65% and a tunability/loss of 43 at a surface electric field of 80 kV/cm at room temperature. X-ray diffraction and transmission electron microscopy analyses indicated that the tunability and dielectric loss were closely related to the crystallinity of the BST films.

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DO - 10.1063/1.1318233

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SN - 0003-6951

VL - 77

SP - 2587

EP - 2589

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 16

ER -

High nonlinearity of Ba_0.6Sr_0.4TiO₃ films heteroepitaxially grown on MgO substrates

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