Influence of Ru doping on the structure, defect chemistry, magnetic interaction and carrier motion of the La(sub 1-x)Na(sub x)MnO(sub 3+delta) manganite

Article Abstract:

The structural, electrical and magnetic characterization of the La(sub 1-x)Na(sub x)Mn(sub 1-y)Ru(sub x)O(sub 3+delta) (LNMRO) system with x = 0.05 and 0.15 and y = 0.005, and 0.15, is reported along with an investigation of the role of the oxygen content on the related redox properties. The analysis shows that ruthenium addition improves electrical and magnetic properties of nonoptimally cation-doped manganites, causing an increase of the Tc value and the insurgence of mangetoresistance effect.

Primary nonferrous metals, not elsewhere classified, Primary Smelting and Refining of Nonferrous Metal (except Copper and Aluminum), New York, Ruthenium, Electric properties, Magnetoresistance

---

Absence of long-range magnetic order in the [La.sub.1.4][Sr.sub.0.8][Ca.sub.0.8]Mn2O7 bilayred manganite

Article Abstract:

The optimally doped [La.sub.1.4][Sr.sub.0.8][Ca.sub.0.8]Mn2O7 bilayered manganite was investigated by high resolution neutron diffraction and magnetometry. The results show the absence of long-range magnetic order in this optimally doped manganite when the A-site of the structure is doped with equal proportions of isovalent Ca and Sr which might be due to a size effect coupled to the cation size mismatch between Sr and Ca ions.

Manganese Compounds, Neutrons, Neutron diffraction, X-rays, Properties, Semiconductor doping

---

Lattice disorder, electric properties and magnetic behavior of La(sub 1-x)NaMnO(sub 3+delta)

Article Abstract:

La(sub 1-x)NaMnO(sub 3+delta) samples with well-defined cation molecularity and oxygen contents (x = 0.05, x = 0.13, and -0.04 <= delta <= 0.078 are analyzed with X-ray powder diffraction investigation (XRPD), electrical conductivity, static magnetization and electron paramagnetic resonance (EPR) measurements.

Science & research, Lanthanum & Compounds, Research, Usage, Electrical conductivity, Lanthanum, Atomic properties

Similar abstracts:

• Abstracts: Influence of vacancy ordering on the precolative behavior of [Li(sub 1-x)Na(sub x)](sub 3a)La(sub 2/3-y)TiO(sub 3) perovskites
• Abstracts: Influence of structural fluctuation on enzyme reaction energy barriers in combined quantum mechanical/molecular mechanical studies.
• Abstracts: Influence of structural fluctuation on enzyme reaction energy barriers in combined quantum mechanical/molecular mechanical studies. . part 2
• Abstracts: Labeling the defects of single-walled carbon nanotubes using titanium dioxide nanoparticles. Surfactant-resisted assembly of Fe-containing nanoparticles for site-specific growth of SWNTs on Si surface
• Abstracts: Facile synthesis and intrinsic conductivity of novel pyrrole copolymer nanoparticles with inherent self-stability

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.