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Low-field magnetic properties as indication of disorder, frustration and cluster formation effects in La₁₋xCaxMn₁₋yFeyO₃

Laiho, R., Lahderanta, E., Salminen, J., Lisunov, K. G., Zakhvalinskii, V. S.

, TC, decreases from 259 to 107 K, indicating growth of disorder by iron doping. A transformation

Low-field magnetic properties of La₁-xSrxMn₁-yFeyO₃

Laiho, R., Lahderanta, E., Zakhvalinskii, V. S., Lashkul, A. V., Lisunov, R. G.

Variable-range hopping conductivity and absence of a true metal–insulator transition in La₀.₇₋δCa₀.₃Mn₁₋ᵧFeᵧO₃

Laiho, R. ; Lisunov, K. G. ; Zakhvalinskii,V. S. ; Lahderanta, E. ; Salminen,J.

4.2–350 K, showing that La vacancies increase the effect of Fe doping by influencing electronic

Hopping conductivity of La₁₋xSrx Mn₁₋yFeyO₃

Laiho, R., Zakhvalinskii, V. S., Lashkul, A. V.

.03-0.25 at temperatures T ~ 5 - 310 K in magnetic fields B up to 8 T. The metallic conductivity at y=0.03 and the variable

Low-field magnetic properties of La₁-xCaxMnO₃ (0≤x≤0.4)

Laiho, R., Lahderanta, E., Petrenko, P., Lisunov, K. G., Zakhvalinskii, V. S.

Magnetic properties of cubic La₁-xCaxMnO₃ (0≤x≤0.4) are investigated between /T=5 and 310K

Lattice distortions, magnetoresistance and hopping conductivity in LaMnO₃₊δ=Искажение решетки магнитосопротивлением и прыжковая проводимость в LaMnO₃₊δ

Laiho, R., Landeranta, E., Lisunov, K. G., Zakhvalinskii, V. S., Stamov, V. S.

.065-0.112 and to rhombohedral (R3c) crystal symmetry for δ= 0.125-0.154

Preparation and Magnetic Properties of LaMnO₃₊δ (0≤ δ ≤0.154)

Zakhvalinskii, V. S. ; Laiho R. ; Lisunov, K. G. , Petrenko, P. A.

= 0-0.154) are investigated. It is found that, in a weak magnetic field ( B = 2 G), the LaMnO₃₊δ

Asymmetry of a complex gap near the Fermi level, determined from measurements of the thermopower in La₁₋xCaxMn₁₋yFeyO₃

Laiho, R., Lahderanta, E., Lisunov, K. G., Zakhvalinskii, V. S., Stamov, V. N.

The experimental data are analysed quantitatively with a percolation model using results of our

Phase separation, ferromagnetism and magnetic irreversibility in La1-xSrxMn1-yFeyO3

Laiho, R., Zakhvalinskii, V. S., Lashkul, A. V., Lisunov, K. G., Nekrasova, Yu. S.

and generation of large FM clusters, whereas the frustration is governed presumably by a system of smaller weakly

Variable-Range Hopping Conduction in LaMnO₃₊δ

Zakhvalinskii, V. S. ; Laiho, R. ; Khokhulin, A. V. ; Lisunov, K. G. ; Lahderanta, E.

of localized states g (ε) near the Fermi level is found to have a Coulomb gap Δ and a rigid gap γ

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