Journal ArticleDOI
Investigation on magnetic, electrical and thermoelectric power of Bi-substituted La0.8Ca0.2MnO3 manganites
TLDR
In this paper, the structural, magnetic, magneto-transport and thermoelectric properties of polycrystalline compounds of La 0.8− x Bi x Ca 0.2 MnO 3 (0≤ x ≤ 0.1) compounds are reported.About:
This article is published in Journal of Magnetism and Magnetic Materials.The article was published on 2015-11-15. It has received 44 citations till now. The article focuses on the topics: Variable-range hopping & Seebeck coefficient.read more
Citations
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Effect of B-site Ti doping on the magnetic, low–field magnetocaloric and electrical transport properties of La0.7Sr0.3Mn1−xTixO3 perovskites
TL;DR: In this article, the effect of Ti doping on the magnetic, magnetocaloric and transport properties of La0.7Sr0.1 polycrystalline compounds was studied using phenomenological method and the results showed that by increasing Ti doping level, the metal-insulator transition temperature decreases and the system with x ≥ 0.2 becomes an insulator.
Journal ArticleDOI
A comparative study on high TCR and MR of La0·67Ca0·33MnO3 polycrystalline ceramics prepared by solid-state and sol-gel methods
TL;DR: In this paper, La0·67Ca0·33MnO3 (LCMO) polycrystalline ceramics were fabricated by solid-state (SS) and sol-gel (SG) methods.
Journal ArticleDOI
Electrical transport properties of La0.845Sr0.155MnO3:Kx (0 ≤ x ≤ 0.2) composites
TL;DR: In this article, the electrical conduction mechanisms on the metallic region have been investigated and the electrical resistivity of the insulating region was explained via the variable-range hopping model.
Journal ArticleDOI
Investigation of cationic disorder effects on the transport and magnetic properties of perovskite Pr0.7-xRExSr0.3MnO3 (x=0.0,0.2; RE = Nd, Sm, & Gd)
TL;DR: In this article, the influence of the A-site cationic size mismatch on the electrical, thermal and magnetotransport properties of Pr 0.7 -x RE x Sr 0.3 MnO 3 (x = 0.0, 0.2 ) compound has been reported.
Journal ArticleDOI
Magnetic inhomogeneity and Griffiths phase in Bi substituted La0.65−xBixCa0.35MnO3 manganites
TL;DR: In this paper, the effect of Bi substitution on structural, magneto-transport, magnetic and thermal properties of La 0.65− x Bi x Ca 0.35 MnO 3 (0≤ x ≤ 0.2) compounds was reported.
References
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Journal ArticleDOI
Thousandfold Change in Resistivity in Magnetoresistive La-Ca-Mn-O Films
TL;DR: A negative isotropic magnetoresistance effect has been observed in thin oxide films of perovskite-like La0.67Ca0.33MnOx, which could be useful for various magnetic and electric device applications if the observed effects of material processing are optimized.
Journal ArticleDOI
Colossal Magnetoresistant Materials: The Key Role of Phase Separation
TL;DR: In this paper, a large variety of experiments reviewed in detail here contain results compatible with the theoretical predictions, including phase diagrams of manganite models, the stabilization of the charge/orbital/spin ordered half-doped correlated electronics (CE)-states, the importance of the naively small Heisenberg coupling among localized spins, the setup of accurate mean-field approximations, and the existence of a new temperature scale T∗ where clusters start forming above the Curie temperature, the presence of stripes in the system, and many others.
Journal ArticleDOI
Spin-Polarized Intergrain Tunneling in La 2/3 Sr 1/3 MnO 3
TL;DR: In this paper, the magnetoresistance and the field dependent magnetization have been systematically examined in the low temperature ferromagnetic metallic state of single crystal and polycrystalline.
BookDOI
Colossal magnetoresistance, charge ordering and related properties of manganese oxides
C. N. R. Rao,B Raveau +1 more
TL;DR: A review of the topics of colossal magnetoresistance, charge ordering and related phenomena exhibited by oxides, and contributions covering the present status of the subject can be found in this paper,.
Journal ArticleDOI
Colossal magnetoresistance is a Griffiths singularity.
TL;DR: This paper demonstrates that the transition should be viewed in the context of the Griffiths phase that arises when disorder suppresses a magnetic transition, which explains unusual aspects of susceptibility and heat capacity data from a single crystal of La0.7Ca0.3MnO3.