Crystal structure and microwave dielectric properties of CaTiO<subscript>3</subscript>-La[Ga<subscript>(1-</subscript><subscript>δ</subscript><subscript>)</subscript>Al<subscript>δ</subscript>]O<subscript>3</subscript> ceramics system.
In: Materials Research Bulletin, Jg. 57 (2014-09-01), S. 140-145
Online
academicJournal
Zugriff:
The crystal structure and microwave dielectric properties of 0.64CaTiO3-0.36La[Ga(1-δ)Alδ]O3 specimens have been investigated in this work. When δ≤0.5, the crystal structure of 0.64CaTiO3-0.36La[Ga(1-δ)Alδ]O3 was orthorhombic, while it transformed into the tetragonal structure when δ>0.5. When δ=0.5, specimens exhibited good microwave dielectric properties with εr=45.54, Q×f=GHz) and τf=-1.7ppm/°C. The 50 at% substitution of Ga3+ by Al3+ in 0.64CaTiO3-0.36LaGaO3 benefited the Q×f value, the results showed that all samples of xCaTiO3-(1-x)La[Ga0.5Al0.5]O3 (x=0.62, 0.63, 0.64, 0.65, 0.66) exhibited ρr≥96.8%, Q×f≥39,000GHz, 44≤εr≤48 and -8ppm/°C≤τf≤+6ppm/°C. [ABSTRACT FROM AUTHOR]
Titel: |
Crystal structure and microwave dielectric properties of CaTiO<subscript>3</subscript>-La[Ga<subscript>(1-</subscript><subscript>δ</subscript><subscript>)</subscript>Al<subscript>δ</subscript>]O<subscript>3</subscript> ceramics system.
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Autor/in / Beteiligte Person: | Liang, Fei ; Ni, Meng ; Lu, Wenzhong ; Feng, Shaoshuai |
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Zeitschrift: | Materials Research Bulletin, Jg. 57 (2014-09-01), S. 140-145 |
Veröffentlichung: | 2014 |
Medientyp: | academicJournal |
ISSN: | 0025-5408 (print) |
DOI: | 10.1016/j.materresbull.2014.05.042 |
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