Journal
FERROELECTRICS
Volume 286, Issue -, Pages 889-896Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/00150190390206347
Keywords
simultaneously ferroelectric and antiferromagnetic crystal; lattice distortion; spontaneous polarization; representation analysis; RMn2O5
Ask authors/readers for more resources
We conducted X-ray diffraction study of YMn2O5 single crystals with an orbital-radiation X-ray source to determine the lattice distortions related to the ferroelectric phase transition. At present, no anomaly of temperature dependence of lattice parameters has been detected around the ferroelectric transition point T-CE = 39 K within the accuracy of lattice parameters, +/- 1 x 10(-4) Angstrom. Moreover neither splitting of Bragg peaks nor appearance of a super lattice reflection were noticed below T-CE. These facts indicate that ionic displacement at T-CE is much smaller in YMn2O5 than in typical ferroelectrics. On the basis of symmetry consideration, we discuss a possible ionic displacements at the ferroelectric transition.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available