Phase Transitions in Disordered Lead Iron Niobate - X-Ray and Synchrotron Radiation Diffraction Experiments

Diffraction above room temperature, on powders and crystals of Pb(Fe0.5Nb0.5)O-3, using X-rays and synchrotron radiation, led to a novel and consistent picture of the symmetry of the phases in this disordered perovskite. The compound is a monoclinic ferroelectric at 293 K, undergoes a structural transition to another ferroelectric, tetragonal state at about 355 K and finally transforms into a cubic form at approximately 376 K. (C) 1997 Elsevier Science Ltd. [References: 23]


Published in:
Solid State Communications, 102, 5, 347-352
Year:
1997
Keywords:
Note:
May
Laboratories:




 Record created 2006-03-07, last modified 2018-01-27


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