Open AccessStudy of the phase transition and charge ordering in single-crystalline Nd1/2Sr1/2MnO3 using x-ray scattering
Author(s) -
ChaoHung Du,
M. E. Ghazi,
P. D. Hatton,
S. Collins,
Bridget M. Murphy,
B. G. Kim,
SW. Cheong
Publication year - 2008
Publication title -
journal of applied physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.699
H-Index - 319
eISSN - 1089-7550
pISSN - 0021-8979
DOI - 10.1063/1.2957070
Subject(s) - charge ordering , condensed matter physics , phase transition , curie temperature , materials science , neutron diffraction , hysteresis , ferromagnetism , bragg's law , scattering , neutron scattering , bragg peak , diffraction , x ray crystallography , crystallography , charge (physics) , chemistry , crystal structure , optics , physics , quantum mechanics , beam (structure)
We report a sequent phase transition using high-resolution synchrotron x-ray scattering in a single crystal Nd1/2Sr1/2MnO3. By measuring the peak profile of Bragg reflections, upon cooling, we observed an increase in the width of the Bragg reflections around the Curie temperature (252 K) corresponding to the transition from a paramagnetic to a ferromagnetic state. Below approximately 200 K, dramatic changes in the width and integrated intensity were observed. Changes continued until the formation of charge ordering with q = (½,0,0) at TCO = 152 K. This charge ordering was observed to be the first order transition with a large hysteresis width of 10 K. This sequent transition is understood by the formation of different magnetic domains at different temperature ranges as that observed by neutron powder diffraction
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