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Local fields at nonmagnetic impurity sites in a perovskite La 0 . 7 Ca 0 . 3 MnO 3
The magnetic hyperfine field and electric field gradient at the 111Cd( ← 111 m Cd) and 111Cd( ← 111 In) probe nuclei introduced in a perovskite manganese oxide La0.7Ca0.3MnO3 (TC ∼ 250 K) were measured for the study of the local magnetism and structure by means of time-differential perturbed angular...
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Published in: | Hyperfine interactions 2016-12, Vol.237 (1), p.1-6, Article 113 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | The magnetic hyperfine field and electric field gradient at the 111Cd( ← 111 m Cd) and 111Cd( ← 111 In) probe nuclei introduced in a perovskite manganese oxide La0.7Ca0.3MnO3 (TC ∼ 250 K) were measured for the study of the local magnetism and structure by means of time-differential perturbed angular correlation spectroscopy. In the ferromagnetic phase at 77 K, a very slight supertransferred magnetic hyperfine field (SMHF) (< 0.014 T) combined with a well-defined electric field gradient was observed at the nonmagnetic 111Cd nucleus on the La/Ca A site. This observation suggests that the large magnetic hyperfine field (Bhf = 6.9 T) measured, in our previous work, at the 140Ce probe nucleus on the A site originates from the contribution of a 4f spin oriented by the SMHF from adjacent Mn ions. |
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ISSN: | 0304-3843 1572-9540 |
DOI: | 10.1007/s10751-016-1325-2 |