Physics – Condensed Matter – Materials Science
Scientific paper
2001-06-28
Phys. Rev. B 65, 132416 (2002)
Physics
Condensed Matter
Materials Science
REVTeX4; 7 pages, 4 figures. Revised 2001/12/05
Scientific paper
10.1103/PhysRevB.65.132416
The low temperature phase of single crystals of Nd$_{0.5}$Ca$_{0.5}$MnO$_3$ and Gd$_{0.5}$Ca$_{0.5}$MnO$_3$ manganites is investigated by squid magnetometry. Nd$_{0.5}$Ca$_{0.5}$MnO$_3$ undergoes a charge-ordering transition at $T_{CO}$=245K, and a long range CE-type antiferromagnetic state is established at $T_N$=145K. The dc-magnetization shows a cooling rate dependence below $T_N$, associated with a weak spontaneous moment. The associated excess magnetization is related to uncompensated spins in the CE-type antiferromagnetic structure, and to the presence in this state of fully orbital ordered regions separated by orbital domain walls. The observed cooling rate dependence is interpreted to be a consequence of the rearrangement of the orbital domain state induced by the large structural changes occurring upon cooling.
Mathieu Renaud
Nordblad Per
Raju A. R.
Rao C. N. R.
No associations
LandOfFree
Cooling rate dependence of the antiferromagnetic domain structure of a single crystalline charge ordered manganite 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 Cooling rate dependence of the antiferromagnetic domain structure of a single crystalline charge ordered manganite, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cooling rate dependence of the antiferromagnetic domain structure of a single crystalline charge ordered manganite will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-123925