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236 results on '"Dung, Dang Duc"'

9. Fabrication of Underwater Ultrasonic Transducer by Using Lead-Free Piezoelectric Materials

Author

Van Vinh, Phan, Thoan, Nguyen Hoang, Duong, Nguyen Xuan, Dung, Dang Duc, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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10. Fabrication of Lead-Free Ferroelectric Bi0.5Na0.5TiO3-Based Materials for Transducer Applications

Author

Thoan, Nguyen Hoang, Vinh, Pham Van, Duong, Nguyen Xuan, Dung, Dang Duc, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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11. Origin of Giant Electric-Field-Induced Strain in Lead-Free Piezoelectric Bi0.5Na0.5TiO3-Based Materials for Transducer Applications

Author

Duong, Nguyen Xuan, Thoan, Nguyen Hoang, Vinh, Pham Van, Dung, Dang Duc, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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12. Magnetic and Optical Properties of Transition Metal (Cr, Mn, Fe, Co, and Ni) Doped Lead-Free Ferroelectric Bi0.5Na0.5TiO3 Materials

Author

Dung, Dang Duc, Thoan, Nguyen Hoang, Lam, Nguyen Huu, Lam, Vu Tien, Trung, Nguyen Ngoc, Linh, Nguyen Hoang, Van, Duong Quoc, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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13. Structural, Magnetic, and Optical Properties of Complex Lead-Free Ferroelectric 0.97Bi0.5Na0.5TiO3 + 0.03AMnO3 (A = Mg, Ca, Sr, Ba) Materials

Author

Dung, Dang Duc, Thoan, Nguyen Hoang, Lam, Vu Tien, Lam, Nguyen Huu, Hue, Man Minh, Trung, Nguyen Ngoc, Van, Duong Quoc, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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14. Optical and Magnetic Properties of Lead-Free Ferroelectric (Bi0.5Na0.5)0.97 A 0.03Ti0.97Fe0.03O3 (A = Mg, Sr, Ca, Ba) Materials

Author

Dung, Dang Duc, Lam, Nguyen Huu, Thoan, Nguyen Hoang, Lam, Vu Tien, Trung, Nguyen Ngoc, Tuan, Nguyen Hoang, Van, Duong Quoc, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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15. Fabrication and Optical Properties of Rare-Earth-Sm-Doped Lead-Free Ferroelectric Bi0.5Na0.5TiO3 Materials

Author

Van, Duong Quoc, Thoan, Nguyen Hoang, Lam, Nguyen Huu, Lam, Vu Tien, Trung, Nguyen Ngoc, Quan, Ngo Duc, Dung, Dang Duc, Cavas-Martínez, Francisco, Editorial Board Member, Chaari, Fakher, Series Editor, di Mare, Francesca, Editorial Board Member, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Editorial Board Member, Ivanov, Vitalii, Series Editor, Kwon, Young W., Editorial Board Member, Trojanowska, Justyna, Editorial Board Member, Long, Banh Tien, editor, Kim, Hyung Sun, editor, Ishizaki, Kozo, editor, Toan, Nguyen Duc, editor, Parinov, Ivan A., editor, and Kim, Yun-Hea, editor

Published
2022
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23. Structural, electronic and optical properties of complex lead-free ferroelectric Ba0.7Ca0.3TiO3 materials: A DFT study.

Author

Ngan, Ngo Huyen, Lam, Vu Tien, Lam, Nguyen Huu, Huyen, Pham Thi, Van, Duong Quoc, Thoan, Nguyen Hoang, and Dung, Dang Duc

Subjects
FERROELECTRIC materials, OPTICAL properties, CONDUCTION bands, DIELECTRIC function, VALENCE bands, ALKALINE earth metals, ELECTRO-optical effects
Abstract

The effect of randomly distributed Ca dopants within the BaTiO3 lattice was investigated using first principle calculations. We examined electronic properties to understand how different orbitals contribute to the conduction and valence bands in doped materials. Our findings indicate that the valence band is primarily composed of Ti-3d and O-2p orbital states, while the conduction band is influenced by the collective contributions of Ba-4d, Ti-3d, and Ca-3d orbital states. Additionally, our results demonstrate a reduction in the bandgap due to Ca doping, with the extent of variation depending on the substituted sites of the Ca atoms. Furthermore, we investigated modifications in optical properties such as absorption, conductivity, dielectric function, refractive index, extinction coefficient, loss function, and reflectivity in the energy range from 0 to 40 eV. The findings reveal the stability of these characteristics in the infrared and visible light regions, and they also depend on the site substitution of Ca cations within the BaTiO3 lattice. We expected that our findings would deepen the understanding of the mechanism and site effect of Ca dopant on the properties of BaTiO3 materials, thereby contributing to the development of lead-free ferroelectric materials with enhanced properties for multifunctional applications. [ABSTRACT FROM AUTHOR]

Published
2024
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40. Effect of Transition Elements on the Thermal Stability of Glassy Alloys 82Al–16Fe–2TM (TM: Ti, Ni, Cu) Prepared by Mechanical Alloying

Author

Nguyen Thi Hoang Oanh, Do Nam Binh, Dung Dang Duc, Quyen Hoang Thi Ngoc, and Nguyen Hoang Viet

Subjects
Al-based amorphous alloy, thermal stability, mechanical alloying, solid-state transformations, Technology, Electrical engineering. Electronics. Nuclear engineering, TK1-9971, Engineering (General). Civil engineering (General), TA1-2040, Microscopy, QH201-278.5, Descriptive and experimental mechanics, QC120-168.85
Abstract

In the present study, the thermal stability and crystallization behavior of mechanical alloyed metallic glassy Al82Fe16Ti2, Al82Fe16Ni2, and Al82Fe16Cu2 were investigated. The microstructure of the milled powders was characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), and differential scanning calorimetry (DSC). The results showed remarkable distinction in thermal stability of the alloys by varying only two atomic percentages of transition elements. Among them, Al82Fe16Ti2 alloy shows the highest thermal stability compared to the others. In the crystallization process, exothermal peaks corresponding to precipitation of fcc-Al and intermetallic phases from amorphous matrix were observed.

Published
2021
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46. Ultrahigh dielectric permittivity in oxide ceramics by hydrogenation

Author

Duong, Nguyen Xuan, primary, Jang, Ji-Soo, additional, Jung, Min-Hyoung, additional, Bae, Jong-Seong, additional, Ahn, Chang Won, additional, Jin, Jong Sung, additional, Ihm, Kyuwook, additional, Kim, Gyehyeon, additional, Lim, So Yeon, additional, Lee, Jongmin, additional, Dung, Dang Duc, additional, Lee, Soonil, additional, Kim, Young-Min, additional, Lee, Sanghan, additional, Yang, Sang Mo, additional, Sohn, Changhee, additional, Kim, Ill Won, additional, Jeong, Hu Young, additional, Baek, Seung-Hyub, additional, and Kim, Tae Heon, additional

Published
2023
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