Physics – Condensed Matter
Scientific paper
2002-03-19
Physics
Condensed Matter
10 pages, 7 figures
Scientific paper
10.1140/epjb/e20020074
The Pr(1-x}CaxMnO3 system exhibits a ferromagnetic insulating state for the composition range x<0.25. A metallic ferromagnetic state is never realized because of the low hole concentration and the very small averaged A-site cation radius. In the present study, the nature of the magnetic excitations at low temperature has been investigated by specific heat measurements on a Pr0.8Ca0.2MnO3 single crystal. The decrease of the specific heat under magnetic field is qualitatively consistent with a suppression of ferromagnetic spin waves in a magnetic field. However, at low temperature, the qualitative agreement with the ferromagnetic spin waves picture is poor. It appears that the large reduction of the specific heat due to the spin waves is compensated by a Schottky-like contribution possibly arising from a Zeeman splitting of the ground state multiplet of the Pr{3+} ions.
Hardy Vincent
Martin Chris
Simon Ch.
Wahl Alexandre
No associations
LandOfFree
Magnetic contributions to the low-temperature specific heat of the ferromagnetic insulator: Pr0.8Ca0.2MnO3 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Magnetic contributions to the low-temperature specific heat of the ferromagnetic insulator: Pr0.8Ca0.2MnO3, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Magnetic contributions to the low-temperature specific heat of the ferromagnetic insulator: Pr0.8Ca0.2MnO3 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-620029