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Title: Very high commutation quality factor and dielectric tunability in nanocomposite SrTiO 3 thin films with T c enhanced to >300 °C

Abstract

We report on nanoengineered SrTiO 3–Sm2O 3 nanocomposite thin films with the highest reported values of commutation quality factor (CQF or K-factor) of >2800 in SrTiO 3 at room temperature. The films also had a large tunability of dielectric constant (49%), low tangent loss (tan δ = 0.01) and a Curie temperature for SrTiO 3 > 300 °C, making them very attractive for tunable RF applications. The enhanced properties originate from the unique nanostructure in the films, with <20 nm diameter strain-controlling Sm 2O 3 nanocolumns embedded in a SrTiO 3 matrix. Very large out-of-plane strains (up to 2.6%) and high tetragonality (c/a) (up to 1.013) were induced in the SrTiO 3. Finally, the K-factor was further enhanced by adding 1 at% Sc 3+ (acceptor) dopant in SrTiO 3 to a value of 3300 with the tangent loss being ≤0.01 up to 1000 kV cm -1.

Authors:
ORCiD logo [1];  [2];  [1]; ORCiD logo [3];  [4]; ORCiD logo [5];  [1]
  1. Univ. of Cambridge (United Kingdom). Dept. of Materials Science and Metallurgy
  2. Univ. Malaysia Terengganu, Terengganu (Malaysia). School of Fundamental Science
  3. Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. Purdue Univ., West Lafayette, IN (United States). School of Materials Engineering
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); USDOE Laboratory Directed Research and Development (LDRD) Program
OSTI Identifier:
1436254
Alternate Identifier(s):
OSTI ID: 1467201
Report Number(s):
BNL-203593-2018-JAAM; LA-UR-17-23232
Journal ID: ISSN 2040-3364; NANOHL
Grant/Contract Number:  
SC0012704; AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nanoscale
Additional Journal Information:
Journal Volume: 10; Journal Issue: 7; Journal ID: ISSN 2040-3364
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; Material Science

Citation Formats

Sangle, Abhijeet L., Lee, Oon Jew, Kursumovic, Ahmed, Zhang, Wenrui, Chen, Aiping, Wang, Haiyan, and MacManus-Driscoll, Judith L. Very high commutation quality factor and dielectric tunability in nanocomposite SrTiO3 thin films with Tc enhanced to >300 °C. United States: N. p., 2018. Web. doi:10.1039/C7NR06991J.
Sangle, Abhijeet L., Lee, Oon Jew, Kursumovic, Ahmed, Zhang, Wenrui, Chen, Aiping, Wang, Haiyan, & MacManus-Driscoll, Judith L. Very high commutation quality factor and dielectric tunability in nanocomposite SrTiO3 thin films with Tc enhanced to >300 °C. United States. doi:10.1039/C7NR06991J.
Sangle, Abhijeet L., Lee, Oon Jew, Kursumovic, Ahmed, Zhang, Wenrui, Chen, Aiping, Wang, Haiyan, and MacManus-Driscoll, Judith L. Mon . "Very high commutation quality factor and dielectric tunability in nanocomposite SrTiO3 thin films with Tc enhanced to >300 °C". United States. doi:10.1039/C7NR06991J. https://www.osti.gov/servlets/purl/1436254.
@article{osti_1436254,
title = {Very high commutation quality factor and dielectric tunability in nanocomposite SrTiO3 thin films with Tc enhanced to >300 °C},
author = {Sangle, Abhijeet L. and Lee, Oon Jew and Kursumovic, Ahmed and Zhang, Wenrui and Chen, Aiping and Wang, Haiyan and MacManus-Driscoll, Judith L.},
abstractNote = {We report on nanoengineered SrTiO3–Sm2O3 nanocomposite thin films with the highest reported values of commutation quality factor (CQF or K-factor) of >2800 in SrTiO3 at room temperature. The films also had a large tunability of dielectric constant (49%), low tangent loss (tan δ = 0.01) and a Curie temperature for SrTiO3 > 300 °C, making them very attractive for tunable RF applications. The enhanced properties originate from the unique nanostructure in the films, with <20 nm diameter strain-controlling Sm2O3 nanocolumns embedded in a SrTiO3 matrix. Very large out-of-plane strains (up to 2.6%) and high tetragonality (c/a) (up to 1.013) were induced in the SrTiO3. Finally, the K-factor was further enhanced by adding 1 at% Sc3+ (acceptor) dopant in SrTiO3 to a value of 3300 with the tangent loss being ≤0.01 up to 1000 kV cm-1.},
doi = {10.1039/C7NR06991J},
journal = {Nanoscale},
number = 7,
volume = 10,
place = {United States},
year = {Mon Feb 05 00:00:00 EST 2018},
month = {Mon Feb 05 00:00:00 EST 2018}
}

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Works referenced in this record:

Enhancement of Ferroelectricity in Strained BaTiO3 Thin Films
journal, November 2004