Journal ArticleDOI
Enhanced magnetoresistance in as?deposited oxygen?deficient La0.6Pb0.4MnO3-y thin films
TLDR
The La0.6Pb0.4MnO3 (LPMO) thin films were in situ deposited at different oxygen partial pressure and at a substrate temperature of 630 degrees C by pulsed laser deposition.Abstract:
The La0.6Pb0.4MnO3(LPMO) thin films were in situ deposited at different oxygen partial pressure and at a substrate temperature of 630 degrees C by pulsed laser deposition. The films grown at lower oxygen partial pressures showed an increase in lattice parameter and resistivity and a decrease in the insulator-metal transition temperature as compared to the stoichiometric LPMO thin film grown at 400 mTorr. Further, these oxygen-deficient thin films showed over 70% giant magnetoresistance (GMR) near the insulator-metal transition temperature against the 40% GMR in the case of stoichiometric thin films. (C) 1995 American Institute of Physics.read more
Citations
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31p-S-4 Giant Magnetoresistance in Magnetic Manganese Oxide with Intrinsic Antiferromagnetic Spin Structure
TL;DR: Giant and isotropic magnetoresistance as huge as −53% was observed in magnetic manganese oxide La0.72Ca0.25MnOz films with an intrinsic antiferromagnetic spin structure as discussed by the authors.
Journal ArticleDOI
Research Progress in Rare Earth-Doped Perovskite Manganite Oxide Nanostructures
TL;DR: An overview of the state of art in the studies on the fabrication, structural characterization, physical properties, and functional applications of rare earth-doped perovskite manganite oxide nanostructures is given.
Journal ArticleDOI
Colossal magnetoresistance in epitaxial la(1-x-y)naymno3 thin film
M. Sahana,R.N. Singh,C. Shivakumara,N. Y. Vasanthacharya,M. S. Hegde,S. Subramanian,V. Prasad,S. V. Subramanyam +7 more
TL;DR: In this article, the authors synthesized La083Na011MnO293 by heating La2O3 and MnCO3 in NaCl melt at 900 °C and showed an insulator-to-metal transition at 290 K at 6 T magnetic field.
Colossal magnetoresistance in epitaxial $La_(_1_-_x_-_y_)$$Na_y$$MnO_3$ thin film
M Sahana,R.N. Singh,C. Shivakumara,N. Y. Vasanthacharya,Hegde,S. Subramanian,Prasad,SV Subramanyam +7 more
TL;DR: In this article, the authors synthesized La0.83Na0.93 by heating La2O3 and MnCO3 in NaCl melt at 900 degrees C. The exact composition was arrived by analyzing each ion by an independent chemical method.
Journal ArticleDOI
Synthesis, structure, and properties of sodium or potassium-doped lanthanum orthomanganites from NaCl or KCl flux
R.N. Singh,C. Shivakumara,N.Y. Vasanthacharya,S. Subramanian,M.S. Hegde,H. Rajagopal,A. Sequeira +6 more
TL;DR: In this article, two ferromagnetic oxide phases have been synthesized from NaCl or KCl flux, starting from $La_2O_3$ and $MnCO_3 $ at 900°C.
References
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Journal ArticleDOI
Giant negative magnetoresistance in perovskitelike La2/3Ba1/3MnOx ferromagnetic films.
R. von Helmolt,R. von Helmolt,Joachim Dr. Wecker,Joachim Dr. Wecker,B. Holzapfel,B. Holzapfel,L. Schultz,L. Schultz,Konrad Samwer,Konrad Samwer +9 more
TL;DR: The samples show a drop in the resistivity at the magnetic transition, and the existence of magnetic polarons seems to dominate the electric transport in this region.
Journal ArticleDOI
Ferromagnetic compounds of manganese with perovskite structure
TL;DR: In this paper, the Curie temperature versus composition and saturation versus composition curves for mixed manganites with perovskite structures are given for LaMnO 3 CaMnNO 3, LaMmO 3 Ω(n 2 )n O(n 3 d )Mn 4+O(n 4 + O 3 2 2 ) and BaMn O 3 Ã 0, respectively.
Journal ArticleDOI
Magnetoresistance in magnetic manganese oxide with intrinsic antiferromagnetic spin structure
TL;DR: Giant and isotropic magnetoresistance as huge as −53% was observed in magnetic manganese oxide La0.72Ca0.25MnOz films with an intrinsic antiferromagnetic spin structure as mentioned in this paper.
31p-S-4 Giant Magnetoresistance in Magnetic Manganese Oxide with Intrinsic Antiferromagnetic Spin Structure
TL;DR: Giant and isotropic magnetoresistance as huge as −53% was observed in magnetic manganese oxide La0.72Ca0.25MnOz films with an intrinsic antiferromagnetic spin structure as discussed by the authors.
Journal ArticleDOI
Dependence of giant magnetoresistance on oxygen stoichiometry and magnetization in polycrystalline La0.67Ba0.33MnOz
TL;DR: A large magnetoresistance effect was observed over a wide temperature range for all samples except the insulating z=2.80 sample, and at low temperature the magnetores resistance was observed to be strongly dependent on the magnetization.