Abstract
Using a scanning microwave microscope (SMM), we have investigated the phase separation in a 30% La58 Sr38 Mn O3 (LSMO) +70% LuMn O3 (LMO) polycrystalline pressed powder sample, in which the LSMO phase is a perovskite ferromagnetic metal while the LMO phase is a hexagonal ferroelectric insulator. When the electrical properties of the sample were imaged using our SMM, the sample showed a significant contrast between the metallic LSMO and the insulating LMO grains, indicating a clear phase separation between the two phases. The metallic phase identified by the SMM clearly showed a ferromagnetic signal when investigated by a magnetic force microscope (MFM), providing solid evidence that the metallic phase is indeed the ferromagnetic LSMO. In addition, we have noticed a slight difference between the images generated by SMM and MFM, and we believe that this is due to the different depth scales probed by the two microscopy techniques.
Original language | English |
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Article number | 012502 |
Pages (from-to) | 012502-1-012502-3 |
Journal | Applied Physics Letters |
Volume | 86 |
Issue number | 1 |
DOIs | |
State | Published - Jan 2005 |
Externally published | Yes |
Funding
This work is supported by Korea Science and Engineering Foundation (KOSEF) through Center for Strongly Correlated Materials Research (CSCMR).