| Autor: |
Liu, K, Wu, XW, Ahn, KH, Sulchek, T, Chien, CL, Xiao, JQ |
| Rok vydání: |
1996 |
| Zdroj: |
Physical review. B, Condensed matter, vol 54, iss 5 |
| Popis: |
Structural, transport, and magnetic properties of (Formula presented)(Formula presented)(Formula presented) (0≤x≤1) have been studied to probe the consequence of strong lattice distortion and reduced double exchange. Charge ordering has been observed over a large composition range of 0.30≤x≤0.80. For 0.33≤x≤0.40, at low temperatures, a magnetic field induces a first-order antiferromagnetic semiconductor to ferromagnetic metal transition and reduces the resistance by several orders of magnitude. These results illustrate the competition between double exchange and mechanisms that promote charge localization. © 1996 The American Physical Society. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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