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

DOI: 10.1063/1.2957070 DOI Help

Authors: C.-H. Du (University of Durham) , M. E. Ghazi (University of Durham) , B. M. Murphy (Universit├Ąt Kiel) , B. G. Kim (University of Durham) , S.-W. Cheong (Rutgers University) , S. P. Collins (Diamond Light Source) , P. D. Hatton (University of Durham)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Journal Of Applied Physics , VOL 104 , PAGES 023517

State: Published (Approved)
Published: July 2008

Abstract: We report a sequent phase transition using high-resolution synchrotron x-ray scattering in a single crystalNd 1/2 Sr 1/2 MnO 3 . 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=(12 ,0,0) at T CO =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 neutronpowderdiffraction.

Journal Keywords: Crystal Structure; Phase Transitions; X-Ray Scattering

Subject Areas: Physics, Materials

Facility: 16.3 at SRS

Added On: 19/08/2009 23:07

Discipline Tags:

Physics Magnetism Materials Science

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