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Imaging the first-order magnetic transition in La0.35Pr0.275Ca0.375MnO3
Mark H Burkhardt1, M A Hossain, S Sarkar
1Stanford Institute for Materials and Energy Sciences (SIMES), SLAC National Accelerator Laboratory, Menlo Park, California 94025, USA.
Physical Review Letters
|September 26, 2012
Summary
Ferromagnetic, charge, orbital, and antiferromagnetic order in La0.35Pr0.275Ca0.375MnO3 were studied. Lattice strain from these orders drives ferromagnetic domain nucleation and glassy phase separation.
Area of Science:
- Condensed Matter Physics
- Materials Science
- Magnetism
Background:
- La0.35Pr0.275Ca0.375MnO3 exhibits complex magnetic and electronic ordering.
- Understanding nanoscale phase coexistence is crucial for materials applications.
Purpose of the Study:
- To investigate the nature of ferromagnetic, charge, orbital, and antiferromagnetic order in La0.35Pr0.275Ca0.375MnO3.
- To elucidate the relationship between lattice strain, order types, and phase separation.
Main Methods:
- Photoemission Electron Microscopy (PEEM) for nanoscale imaging.
- Resonant Elastic Soft X-ray Scattering (RSXS) for probing electronic and magnetic order.
- Combined temperature-dependent measurements.
Main Results:
- Ferromagnetic domains nucleate under significant lattice strain induced by charge, orbital, and antiferromagnetic order.
- Lattice distortions linked to charge and orbital order exhibit glassy behavior.
- Phase separation is driven by the interplay between glassy lattice distortions and itinerant charge carriers.
Conclusions:
- The complex interplay of various orders and lattice strain dictates the magnetic properties of La0.35Pr0.275Ca0.375MnO3.
- Glassy lattice dynamics contribute to phase separation even below the Curie temperature.
- This research provides insights into nanoscale phenomena in manganites.
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