Lee, Young-Shin Yim, Haena Yoo, So-Yeon Ju, Byeong-Kwon Choi, Ji-Won 2024-01-20T01:02:31Z 2024-01-20T01:02:31Z 2021-09-05 2017-07-15 0925-8388 https://pubs.kist.re.kr/handle/201004/122518 Sr2Nb3O10 (SNO) nanosheets were obtained by exfoliating from a perovskite layered structure of HSr2Nb3O10 (HSNO). The nanosheets were deposited on substrates simultaneously with unintended tetrabutylammonium cations (TBA(+)) by electrophoretic deposition (EPD) process. To eliminate TBA+ from the SNO dielectric nanosheet thin films, the films were exposed to ultraviolet (UV). Since UV exposure can't decompose TBA(+) completely, thermal annealing was additionally conducted by employing different furnaces at various atmospheres. XRD shows the reduction in lattice constant after UV and thermal treatments, indicating that TBA cations were decomposed in the interlayer of nano sheets. FT-IR spectra analysis depicted that the organic materials were eliminated through the post deposition treatments. In addition, XPS data indicated that films treated by a combination of UV and thermal had a lower relative atomic ratio of carbon and nitrogen than as-deposited and only-UV treated films. The optimum process conditions for improving dielectric properties were UV exposure for 15 h and subsequent thermal annealing in a box furnace in the air at 600 degrees C for 1 h. When compared to the as deposited film, the dielectric constants of films further annealed by the box furnace in the air were increased from 8 to 27 at 1 MHz whereas dielectric loss (tan 8) decreased from 5% to 2%. Additional thermal treatment strongly affects nanosheets to decompose TBA(+). (C) 2017 Elsevier B.V. All rights reserved. English ELSEVIER SCIENCE SA TITANIA NANOSHEETS GRAPHENE NANOSHEETS GRAPHITE OXIDE BATIO3 POWDERS LAYER EXFOLIATION IRRADIATION FABRICATION CAPACITORS MLCC Dielectric properties of single crystal Sr2Nb3O10 dielectric nanosheet thin films by electrophoretic deposition (EPD) and post deposition treatments Article 10.1016/j.jallcom.2017.03.342 1 JOURNAL OF ALLOYS AND COMPOUNDS, v.711, pp.51 - 57 JOURNAL OF ALLOYS AND COMPOUNDS 711 51 57 scie scopus 000401593200007 2-s2.0-85016780981 Chemistry, Physical Materials Science, Multidisciplinary Metallurgy & Metallurgical Engineering Chemistry Materials Science Metallurgy & Metallurgical Engineering Article TITANIA NANOSHEETS GRAPHENE NANOSHEETS GRAPHITE OXIDE BATIO3 POWDERS LAYER EXFOLIATION IRRADIATION FABRICATION CAPACITORS MLCC Nanosheet Electrophoretic deposition Post treatment Dielectric properties