Sol-Gel Processing of the Ti2Ca1Ba2Cu2O8+X High Tc Superconducting Phase

Autor:	George Kordas, M. R. Teepe, D. S. Kenzer, G.A. Moore
Rok vydání:	1990
Předmět:	Materials science Small-angle X-ray scattering Evaporation Analytical chemistry Thermal treatment law.invention chemistry.chemical_compound chemistry law Phase (matter) Alkoxide Calcination Solubility Sol-gel
Zdroj:	MRS Proceedings. 180
ISSN:	1946-4274 0272-9172
DOI:	10.1557/proc-180-901
Popis:	An alkoxide Sol-Gel system was developed to produce bulk powders of the TI2Ca1Ba2Cu2O8+x high Tc superconducting phase. Methoxyethoxide and Cu(II) ethoxide precursors were used for the formation of homogeneous sols. Solubility of the Cu(II) ethoxide was aided by using a 2-methoxyethanol/methyl ethyl ketone/toluene solvent system. The sols were characterized by small angle x-ray scattering (SAXS) and TEM. Powders were produced by rotary evaporation followed by thermal treatment in a closed container with thallium metal present at 900°C for various calcination times. Powders were characterized by x-ray diffraction, resistivity and magnetic susceptibility measurements, and chemical analysis. Samples exhibited transition onsets between 100 and 110K depending upon the processing conditions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0aed2b80f6e15423814ea4275848df19 https://doi.org/10.1557/proc-180-901 Zobrazit plný text záznamu Full text from SpringerLink