Journal article

Authors list: Djerdj, I; Popovic, J; Mal, S; Weller, T; Nuskol, M; Jagličić, Z; Skoko, Z; Pajic, D; Suchomski, C; Voepel, P; Marschall, R; Kozlevcar, B; Smarsly, BM

Publication year: 2016

Pages: 2535-2541

Journal: Crystal Growth and Design

Volume number: 16

Issue number: 5

ISSN: 0065-7727

DOI Link: https://doi.org/10.1021/acs.cgd.5b01558

Publisher: American Chemical Society

Abstract: 

Highly crystalline SrFe2/3Te1/3O3, Ba3Fe2TeO9, and Ba2NiTeO6 have been synthesized by using a specially developed sol–gel route methodology, reducing the time needed employing solid-state routes and resulting in high reaction yield up to 75%. These materials have been studied by X-ray powder diffraction (XRPD), scanning and transmission electron microscopy, Raman spectroscopy, and dielectric and magnetic measurements. At room temperature, the crystal structure of SrFe2/3Te1/3O3 is cubic, space group Pm3̅m, with a = 3.9373(2) Å, whereas Ba3Fe2TeO9 crystallizes in the hexagonal crystal system, space group P63/mmc, a = 5.7691(4) Å, and c = 14.208(1) Å. The third studied perovskite Ba2NiTeO6 crystallizes in the trigonal R3̅m space group with a = 5.7974(4) Å and c = 28.599(2) Å. Based on structural characterization results, the obtained single and double perovskite crystallites are nearly in nanometer regime, ranging from 45 to 164 nm, building micrometer-sized particles with visible well-faceted hexagonal morphology. Magnetic measurements show the onset of ferrimagnetic ordering at relatively high temperature of 667 K for the SrFe2/3Te1/3O3, whereas Ba3Fe2TeO9 and Ba2NiTeO6 show antiferromagnetic ordering below 80 and 8.6 K, respectively. The measured room temperature dielectric constants are in the range between 15 and 77.Highly crystalline SrFe2/3Te1/3O3, Ba3Fe2TeO9, and Ba2NiTeO6 have been synthesized by using a specially developed sol–gel route methodology, reducing the time needed employing solid-state routes and resulting in high reaction yield up to 75%. These materials have been studied by X-ray powder diffraction (XRPD), scanning and transmission electron microscopy, Raman spectroscopy, and dielectric and magnetic measurements. At room temperature, the crystal structure of SrFe2/3Te1/3O3 is cubic, space group Pm3̅m, with a = 3.9373(2) Å, whereas Ba3Fe2TeO9 crystallizes in the hexagonal crystal system, space group P63/mmc, a = 5.7691(4) Å, and c = 14.208(1) Å. The third studied perovskite Ba2NiTeO6 crystallizes in the trigonal R3̅m space group with a = 5.7974(4) Å and c = 28.599(2) Å. Based on structural characterization results, the obtained single and double perovskite crystallites are nearly in nanometer regime, ranging from 45 to 164 nm, building micrometer-sized particles with visible well-faceted hexagonal morphology. Magnetic measurements show the onset of ferrimagnetic ordering at relatively high temperature of 667 K for the SrFe2/3Te1/3O3, whereas Ba3Fe2TeO9 and Ba2NiTeO6 show antiferromagnetic ordering below 80 and 8.6 K, respectively. The measured room temperature dielectric constants are in the range between 15 and 77.

Harvard Citation style: Djerdj, I., Popovic, J., Mal, S., Weller, T., Nuskol, M., Jagličić, Z., et al. (2016) Aqueous Sol–Gel Route toward Selected Quaternary Metal Oxides with Single and Double Perovskite-Type Structure Containing Tellurium, Crystal Growth and Design, 16(5), pp. 2535-2541. https://doi.org/10.1021/acs.cgd.5b01558

APA Citation style: Djerdj, I., Popovic, J., Mal, S., Weller, T., Nuskol, M., Jagličić, Z., Skoko, Z., Pajic, D., Suchomski, C., Voepel, P., Marschall, R., Kozlevcar, B., & Smarsly, B. (2016). Aqueous Sol–Gel Route toward Selected Quaternary Metal Oxides with Single and Double Perovskite-Type Structure Containing Tellurium. Crystal Growth and Design. 16(5), 2535-2541. https://doi.org/10.1021/acs.cgd.5b01558