TY - JOUR
T1 - Evolution of the low-frequency spin dynamics in ferromagnetic manganites
AU - Fernandez-Baca, J. A.
AU - Dai, P.
AU - Hwang, H. Y.
AU - Kloc, C.
AU - Cheong, S. W.
PY - 1998
Y1 - 1998
N2 - Neutron scattering was used to study the ferromagnetic manganites Nd0.7Sr0.3MnO3 (TC = 197.9K) and Pr0.63Sr0.37MnO3 (TC = 300.9K). The spin dynamical behavior of these two systems is similar at low temperatures but drastically different at temperatures around TC. While the formation of spin clusters of size (∼20Å) dominates the spin dynamics of the 197.9 K sample close to TC, the paramagnetic to ferromagnetic transition for the 300.9 K sample is more conventional. These results, combined with seemingly inconsistent earlier reports, reveal clear systematics in the spin dynamics of the manganites.
AB - Neutron scattering was used to study the ferromagnetic manganites Nd0.7Sr0.3MnO3 (TC = 197.9K) and Pr0.63Sr0.37MnO3 (TC = 300.9K). The spin dynamical behavior of these two systems is similar at low temperatures but drastically different at temperatures around TC. While the formation of spin clusters of size (∼20Å) dominates the spin dynamics of the 197.9 K sample close to TC, the paramagnetic to ferromagnetic transition for the 300.9 K sample is more conventional. These results, combined with seemingly inconsistent earlier reports, reveal clear systematics in the spin dynamics of the manganites.
UR - http://www.scopus.com/inward/record.url?scp=0343533517&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.80.4012
DO - 10.1103/PhysRevLett.80.4012
M3 - Article
AN - SCOPUS:0343533517
SN - 0031-9007
VL - 80
SP - 4012
EP - 4015
JO - Physical Review Letters
JF - Physical Review Letters
IS - 18
ER -