An Energy-Dispersive X-Ray Diffraction Study of Monoclinic Eu2O3 under Pressure

✍ Scribed by G. Chen; J.R. Peterson; K.E. Brister

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 148 KB
• Volume: 111
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1994.1250

✦ Synopsis

The phase behavior of monoclinic ( (B)-type) (\mathrm{Eu}{2} \mathrm{O}{3}) under pressure in a diamond anvil cell was studied at room temperature by energydispersive X-ray diffraction at the Cornell High Energy Synchrotron Source. The bulk modulus (\left(B_{0}\right)) of (B)-type (\mathrm{Eu}{2} \mathrm{O}{3}), derived from the compression curve obtained, was (140 \mathrm{GPa}). A pressure-induced phase transition from the monoclinic to the hexagonal ( (A)-type) crystal structure was observed at about (4.7 \mathrm{GPa}). The fractional volume change, (\Delta V / V), under this transition pressure was approximately (-2 %). 1994 Academic Press, Inc.