Unknown

Dataset Information

0

Very high commutation quality factor and dielectric tunability in nanocomposite SrTiO3 thin films with Tc enhanced to >300 °C.


ABSTRACT: 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?? = 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. 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.

SUBMITTER: Sangle AL 

PROVIDER: S-EPMC5815283 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature

altmetric image

Publications

Very high commutation quality factor and dielectric tunability in nanocomposite SrTiO<sub>3</sub> thin films with T<sub>c</sub> enhanced to >300 °C.

Sangle Abhijeet L AL   Lee Oon Jew OJ   Kursumovic Ahmed A   Zhang Wenrui W   Chen Aiping A   Wang Haiyan H   MacManus-Driscoll Judith L JL  

Nanoscale 20180201 7


We report on nanoengineered SrTiO<sub>3</sub>-Sm<sub>2</sub>O<sub>3</sub> nanocomposite thin films with the highest reported values of commutation quality factor (CQF or K-factor) of >2800 in SrTiO<sub>3</sub> 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<sub>3</sub> > 300 °C, making them very attractive for tunable RF applications. The enhanced properties originate from the unique nanost  ...[more]

Similar Datasets

| S-EPMC4462142 | biostudies-other
| S-EPMC4657050 | biostudies-literature
| S-EPMC4594126 | biostudies-literature
| S-EPMC9428769 | biostudies-literature
| S-EPMC4649914 | biostudies-literature
| S-EPMC6359714 | biostudies-literature
| S-EPMC6789001 | biostudies-literature
| S-EPMC5893625 | biostudies-literature
| S-EPMC6443801 | biostudies-literature
| S-EPMC7174340 | biostudies-literature