Abstract
The dc resistivity, magnetoresistance, and magnetic susceptibility of (Formula presented)(Formula presented)(Formula presented) compounds have been investigated in the temperature range of 4-300 K for magnetic fields up to 7 T. In the doping range studied (0.05≤x≤0.25) the electronic properties of the material exhibit a crossover from semiconducting to metallic behavior. The magnetoresistance is highest in the semiconducting state. A correlation was found between the energy gap determined from the dc conductivity and the energy scale identified from neutron scattering data. The results are interpreted in terms of a double-exchange model.
| Original language | English |
|---|---|
| Pages (from-to) | 8207-8210 |
| Number of pages | 4 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 53 |
| Issue number | 13 |
| DOIs | |
| State | Published - 1996 |
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