Particle size effect on the new phase transition in a tridymite compound, CsCoPO4

Autor:	Hitoshi Kawaji, Yoshihiro Kuroiwa, Atsusi Nidaira, Tooru Atake, Y. Ishihara, Takeo Tojo
Rok vydání:	2008
Předmět:	Phase transition Crystallography Tridymite Differential scanning calorimetry Chemistry Enthalpy Particle Particle size Crystal structure Physical and Theoretical Chemistry Condensed Matter Physics Powder diffraction
Zdroj:	Journal of Thermal Analysis and Calorimetry. 92:451-455
ISSN:	1572-8943 1388-6150
DOI:	10.1007/s10973-007-8969-8
Popis:	A new phase transition (III–IV) was found at 311 K in CsCoPO4 by DSC measurements. The crystal structure of all the phases, I–IV, in CsCoPO4 was studied by synchrotron-radiation X-ray powder diffraction. The diffractometry revealed that CsCoPO4 had the same crystal structure as that of corresponding phases in CsZnPO4. An extremely large particle size effect was found on III–IV phase transition in CsCoPO4; the phase transition enthalpy decreases with decreasing the particle size around 0.1 mm. Such large particle size effects had been also observed in CsZnPO4. However, no III–IV phase transition was observed in the particle smaller than 0.1 mm of CsZnPO4, while such a critical size was not found in CsCoPO4.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c827e1629d6adbf1ba23e671602526bd https://doi.org/10.1007/s10973-007-8969-8 Zobrazit plný text záznamu Plný text ve formátu PDF