TY - JOUR
T1 - Crystal structure and magnetic order in bilayered La1.39Sr1.61Mn2O7
AU - Wu, S. Y.
AU - Li, W. H.
AU - Lee, K. C.
AU - Yang, H. D.
N1 - Funding Information:
We thank the support of the National Institute of Standards and Technology, US Department of Commerce, in providing the neutron facilities used in this work, and the assistance from Dr. J.W. Lynn of NIST during the course of experiments. This work was supported by the National Science Council of the ROC under Grant no. NSC 89-2112-M-008-067.
PY - 2001/7/20
Y1 - 2001/7/20
N2 - Neutron diffraction, ac magnetic susceptibility, and dc electric resistivity measurements were performed to study the structural, electric, and magnetic properties of naturally bilayered La1.39Sr1.61Mn2O7. Although the system was believed to be under-doped, an insulator-to-metal transition was clearly seen at around 110 K. An anomaly was also evident in the magnetic susceptibility, signifying the ordering of the Mn spins. The Mn spins were found to order three-dimensionally below 90 K. Both ferromagnetic and antiferromagnetic correlations were present. Ferromagnetic couplings were observed within each bilayer, whereas a non-collinear arrangement between the adjacent bilayers or a magnetic phase separation behavior was found. No significant canting of spins between the neighboring layers within each bilayer was found.
AB - Neutron diffraction, ac magnetic susceptibility, and dc electric resistivity measurements were performed to study the structural, electric, and magnetic properties of naturally bilayered La1.39Sr1.61Mn2O7. Although the system was believed to be under-doped, an insulator-to-metal transition was clearly seen at around 110 K. An anomaly was also evident in the magnetic susceptibility, signifying the ordering of the Mn spins. The Mn spins were found to order three-dimensionally below 90 K. Both ferromagnetic and antiferromagnetic correlations were present. Ferromagnetic couplings were observed within each bilayer, whereas a non-collinear arrangement between the adjacent bilayers or a magnetic phase separation behavior was found. No significant canting of spins between the neighboring layers within each bilayer was found.
UR - http://www.scopus.com/inward/record.url?scp=0035919949&partnerID=8YFLogxK
U2 - 10.1016/S0921-5107(01)00559-1
DO - 10.1016/S0921-5107(01)00559-1
M3 - 期刊論文
AN - SCOPUS:0035919949
VL - 84
SP - 211
EP - 216
JO - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
JF - Materials Science and Engineering B: Solid-State Materials for Advanced Technology
SN - 0921-5107
IS - 3
ER -