Ferromagnetic domains and phase separation in La<SUB>5/8-y</SUB>Pr<SUB>y</SUB>Ca<SUB>3/8</SUB>MnO<SUB>3</SUB> manganites: observations by Lorentz electron microscopy
- He, J.
- Asaka, T.
- Volkov, V.
- Chaudhuri, S.
- Budhani, R. C.
- Zhu, Y.
DOIAbstract
La<SUB>5/8-y</SUB>Pr<SUB>y</SUB>Ca<SUB>3/8</SUB>MnO<SUB>3</SUB> (LPCMO) manganese oxides (space group Pnma and lattice parameters a≈0.546 nm, b≈0.772 nm, c≈0.548 nm) have attracted great scientific interest due to their unusual electronic transport and magnetic properties, such as colossal magnetoresistance (CMR) and charge ordering. To utilize these materials for practical applications, it is vital to understand their structureproperty relationships, especially the role of ferromagnetic (FM) domain structures and phase separation (PS). [1, 2] Here, we present some of our recent work using in-situ electron microscopy and magnetic phase retrieval using a field-free electron microscope (JEOL 2100F-M)
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