Abstract
We investigated dc and ac susceptibilities of Pr0.63Sr0.37MnO3 and Nd0.7Sr0.3MnO3 single crystals. Surprisingly, real components of the ac susceptibility of both samples are frequency dependent below TC, indicating competition between ferromagnetic and antiferromagnetic interactions even in the ferromagnetic phase. We also found evidence of rare-earth moment ordering at low temperatures. Our ac susceptibility data suggest strongly that ferromagnetic phases of the two samples are of different nature. By comparing the resistivity data with the susceptibility results near TC, we propose that the order parameter of magnetic origin should be coupled to the other degrees of freedom in the case of Nd0.7Sr0.3MnO3.
Original language | English |
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Pages (from-to) | 14804-14808 |
Number of pages | 5 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 60 |
Issue number | 21 |
DOIs | |
State | Published - 1999 |