کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1811193 | 1025583 | 2011 | 6 صفحه PDF | دانلود رایگان |

We report results of our muon spin relaxation measurements in the series of polycrystalline compounds Pr1−xSrxCoO3 (x=0.3, 0.4 and 0.5) and Nd1−xSrxCoO3 (x=0.3 and 0.5). For the Pr-based samples our data clearly indicate the existence of two magnetic transitions, as also inferred from macroscopic measurements. While the high temperature transition is typical for cobaltites (∼200 K), the low temperature one is unusual. In our experiments it occurs below about 120 K and it manifests itself as a change in the slope of the temperature variation of the muon spin depolarization rate λ(T). For the Nd-based samples we found an increase of the muon spin depolarization rate below 45 K, temperature at which the sample is ferrimagnetic, when the Nd sublattice coupled antiparallel to the Co lattice. No phase separation could be evidenced in our samples by μSR experiments.
Journal: Physica B: Condensed Matter - Volume 406, Issue 14, 15 July 2011, Pages 2795–2800