Synchrotron radiation X-ray powder diffractometer with a cylindrical imaging plate

Abstract

A synchrotron radiation X-ray powder diffractometer for samples of very small amount has been developed to collect high-quality diffraction patterns under extreme conditions,i.e.at low temperature and/or high pressure. A new cylindrical imaging plate (CIP) is used as a detector, in addition to a conventional flat-type imaging plate (FIP). By using the CIP system, the diffraction data in a diffraction angle range −44 ≤ 2θ ≤ 122° are collected with a dynamic range of about 106. The alignment of the diffractometer, measurement and analysis are automatically operated by a workstation. A performance test shows that the CIP system has spatial resolution of about 0.07° with a dynamic range of 106. The diffraction pattern of a standard sample of Si measured by the CIP system has high quality; the refinement of the structure reachesRw= 3.68% even in the case of a small amount of sample (about 2 µg) and a short exposure time (60 s). Examples of experiments at low temperatures under ambient and high pressures are also presented.

Ferromagnetism and giant magnetoresistance in the rare-earth fulleridesEu6−xSrxIshii1, Fujiwara2, Suematsu3 et al. 2002Phys. Rev. B271330View full textAdd to dashboardCite

“…The samples was put into a glass capillary in 0.3 mm diameter and an imaging plate was used for the detection 11 . Magnetic measurements were performed using a SQUID magnetometer.…”

Pressure effects in hollow and solid iron oxide nanoparticles

“…Accelerator Research Organization (KEK) [14]. The wavelength of the incident X-ray was λ = 0.68850(2)Å.…”

Effect of Pressure on a Chiral Two-Dimensional Ferrimagnet

“…We investigated the effect of pressure on the ac magnetic response of a chiral magnet [Cr(CN) 6 ][Mn(R)-pnH(H 2 O)] H 2 O. The experimental results indicate that this chiral compound originally has successive magnetic transitions.…”

“…The green polycrystalline sample of the target compound, 6 ], Mn(ClO 4 ) 2 , and (R)-1,2-diaminopropane dihydrochloride adjusted to pH 6-7 with KOH under an argon atmosphere.…”

“…A molecule-based chiral ferrimagnet [Cr(CN) 6 ][Mn (R)-pnH(H 2 O)]H 2 O ((R)-pn: (R)-1,2-diaminopropane) has a two-dimensional antiferromagnetic network on the bc-plane, via the cyanide bridges between Mn and Cr ions. 1,2) The magnetic transition temperature T C is 38 K, which is relatively high among those of known molecule-based magnets.…”