NDLI: Sr<sub>2</sub>LaAlTiO<sub>7</sub>: a new Ruddlesden–Popper compound with excellent microwave dielectric properties

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Journal of Materials Chemistry C Vol - 4 Issue - 7

Journal of Materials Chemistry C Vol - 4 Issue - 6

Journal of Materials Chemistry C Vol - 4 Issue - 5

Journal of Materials Chemistry C Vol -3

Journal of Materials Chemistry C Vol -2

Journal of Materials Chemistry C Vol -1

Sr₂LaAlTiO₇: a new Ruddlesden–Popper compound with excellent microwave dielectric properties

Content Provider	Royal Society of Chemistry (RSC)
Author	Liu, Bing Chen, Xiang Ming Liu, Xiao Qiang
Copyright Year	2016
Abstract	A new n = 2 type Ruddlesden–Popper compound Sr2LaAlTiO7 was synthesized and characterized, and the microwave dielectric properties were investigated together with their microstructures. X-ray diffraction (XRD) Rietveld analysis and selected area electron diffraction (SAED) patterns confirmed that these compounds belong to the I4/mmm space group with tetragonal crystal symmetry. The lattice parameters were calculated as a = b = 3.840 Å and c = 20.270 Å. The interlayer polarization was considerably lower than that of the previously reported SrLa2Al2O7 ceramics, and a well ordered distribution of ions along the c axis was confirmed from the high resolution transmission electron microscopy (HRTEM) images. Excellent microwave dielectric properties were obtained and an optimal combination (εr = 26.5, Q × f = 110 850 GHz, τf = 2.95 ppm °C−1) was obtained for the sample sintered at 1600 °C in air for 3 h. Considering the merits of a simple preparation, less process sensitivity and, most importantly, the comparatively cheap raw materials, Sr2LaAlTiO7 ceramics could be expected as promising new candidate for ultra-low loss microwave dielectric ceramics.
Starting Page	1720
Ending Page	1726
Page Count	7
File Format	HTM / HTML PDF
ISSN	20507526
Volume Number	4
Issue Number	8
Journal	Journal of Materials Chemistry C
DOI	10.1039/c5tc03653d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Rietveld Microwave Dielectric X-ray crystallography Gerrit Rietveld Electron diffraction Iodine Space group Tetragonal crystal system Crystal structure Transmission electron microscopy Sintering
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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