High temperature crystal structure of sanidine Part I. A radiative microfurnace for single-crystal X-ray diffraction, acquiring control of the temperature against χ-angle movement
Saito, Shizuo; Shimizu, Masahirο; Kimata, Mitsuyοshi
published: Feb 22, 1996
manuscript accepted: Sep 21, 1995
manuscript received: Feb 9, 1994
ArtNo. ESP147050801003, Price: 29.00 €
Abstract A new microfurnace using a Pt-radiative heater, regulated by temperature correction linked to the χ-angle movement, was designed to conduct high-temperature X-ray diffraction experiments on single crystals. The thermocouple temperature which maintains the desired crystal temperature and which apparently eliminates the"chimney effect" is computed for each reflection from the χ-correction factors previously determined for the heater. The design utilizes the stability of electrically-controlled Pt-radiation devices, while the air-cooling system prevents damage to the Kapton windows of the microfurnace. Operating temperatures up to about 1100°C can be reached and maintained to within ± 5°C for long periods of time. As an example of application, a high-temperature X-ray diffraction study of sanidine is presented in Part II.