TY - JOUR
KW - Thin films
KW - Perovskite
KW - Oxides
KW - Manganese compounds
KW - Epitaxial growth
KW - Superlattices
KW - Magnetic field effects
KW - Magnetic films
KW - Electric conductivity measurement
KW - Epitaxial magnetoresistive films
KW - Giant magnetoresistance increase
KW - Laser-ablated oxide films
KW - Manganese oxide magnetic films
KW - Perovskite magnetic films
KW - Superlattice magnetic films
AU - S Jin
AU - T.H Tiefel
AU - M McCormack
AU - R.A Fastnacht
AU - Ramamoorthy Ramesh
AU - L.H Chen
AB - A negative isotropic magnetoresistance effect more than three orders of magnitude larger than the typical giant magnetoresistance of some superlattice films has been observed in thin oxide films of perovskite-like La 0.67Ca0.33MnOx. Epitaxial films that are grown on LaAlO3 substrates by laser ablation and suitably heat treated exhibit magnetoresistance values as high as 127,000 percent near 77 kelvin and ∼1300 percent near room temperature. Such a phenomenon could be useful for various magnetic and electric device applications if the observed effects of material processing are optimized. Possible mechanisms for the observed effect are discussed.
BT - Science
DO - 10.1126/science.264.5157.413
LA - eng
M1 - 5157
N1 - cited By 4504
N2 - A negative isotropic magnetoresistance effect more than three orders of magnitude larger than the typical giant magnetoresistance of some superlattice films has been observed in thin oxide films of perovskite-like La 0.67Ca0.33MnOx. Epitaxial films that are grown on LaAlO3 substrates by laser ablation and suitably heat treated exhibit magnetoresistance values as high as 127,000 percent near 77 kelvin and ∼1300 percent near room temperature. Such a phenomenon could be useful for various magnetic and electric device applications if the observed effects of material processing are optimized. Possible mechanisms for the observed effect are discussed.
PY - 1994
SP - 413
EP - 415
T2 - Science
TI - Thousandfold change in resistivity in magnetoresistive La-Ca-Mn-O films
VL - 264
SN - 00368075
ER -