Abstract
The zero-field (Formula presented) nuclear magnetic resonance (NMR) was studied in polycrystalline (Formula presented) for (Formula presented) to investigate magnetic phases in ordered states. The main result of this work is that mixed states are found near any phase transition boundary induced by either temperature or hole doping. The analysis of the NMR signal intensity and resonance frequency provides the evidence for ferromagentic clusters or magnetic polarons near the ferromagnetic transition temperature (Formula presented) The drastic change of the enhancement factor crossing the phase boundary at (Formula presented) implies the existence of single domain ferromagnetic microregions imbedded in an antiferromagnetic host for (Formula presented) The comparison of NMR signal intensity with bulk magnetization shows that the macroscopic antiferromagnetic phase at (Formula presented) is a mixed state of microscopic ferromagnetic and antiferromagnetic phases.
| Original language | English |
|---|---|
| Pages (from-to) | 492-496 |
| Number of pages | 5 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 59 |
| Issue number | 1 |
| DOIs | |
| State | Published - 1999 |