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Study of the phase transition and charge ordering in single-crystalline Nd1/2Sr1/2MnO3 using x-ray scattering.

Du, C.H. and Ghazi, M.E. and Hatton, P.D. and Collins, S.P. and Murphy, B.M. and Kim, B.G. and Cheong, S.W. (2008) 'Study of the phase transition and charge ordering in single-crystalline Nd1/2Sr1/2MnO3 using x-ray scattering.', Journal of applied physics., 104 (2). 023517.

Abstract

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.

Item Type:Article
Keywords:Curie temperature, Ferromagnetic materials, Ferromagnetic-paramagnetic transitions, Magnetic domains, Magnetic hysteresis, Neodymium compounds, Paramagnetic materials, Strontium compounds, X-ray scattering, ND0.5SR0.5MNO3, LA0.5CA0.5MNO3.
Full text:PDF - Published Version (226Kb)
Status:Peer-reviewed
Publisher Web site:http://dx.doi.org/10.1063/1.2957070
Publisher statement:Copyright (2008) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Du, C.H. and Ghazi, M.E. and Hatton, P.D. and Collins, S.P. and Murphy, B.M. and Kim, B.G. and Cheong, S.W. (2008) 'Study of the phase transition and charge ordering in single-crystalline Nd1/2Sr1/2MnO3 using x-ray scattering.', Journal of applied physics., 104 (2). 023517 and may be found at http://dx.doi.org/10.1063/1.2957070
Record Created:29 Oct 2012 16:20
Last Modified:02 Nov 2012 13:31

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