Optical spectroscopy of phase separation in LaxMnO3

Loshkareva, N. N.; Solin, N. I.; Sukhorukov, Yu. P.; Lobachevskaya, N. I.; Панфилова, Е. В.

doi:10.1016/s0921-4526(00)00539-1

Cited by 19 publications

(12 citation statements)

References 11 publications

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“…As shown for manganites [14,15,23], in the energy range of light interaction with charge carriers, the behavior of t(T ) [or transmitted light intensity I(T )] follows the temperature behavior of resistivity in the case that metallic FM region percolates through the whole material. For the manganites, which for some reasons consist of separated metallic regions embedded in semiconducting matrix, the I(T ) dependence reflects the temperature behavior of the resistivity in these isolated metallic regions (or clusters) and this behavior can be quite different from the direct-current ρ(T ) dependences.…”

Section: Optical Absorptionmentioning

confidence: 83%

Spin states and phase separation inLa1−xSrxCoO

et al. 2003

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Optical absorption and transverse Kerr effect spectra, resistivity, and magnetoresistance of La 1Ϫx Sr x CoO 3 (xϭ0.15,0.25,0.35) films have been studied. The temperature dependences of the optical and magneto-optical properties of the films exhibit features which can be attributed to the transition of the Co 3ϩ ions from the low-spin state (Sϭ0) to the intermediate-spin state (Sϭ1) and to orbital ordering of the Co 3ϩ ions in the latter state. The evolution of the properties influenced by doping with Sr is interpreted on the basis of the phase separation model.

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Section: Optical Absorptionmentioning

confidence: 83%

Spin states and phase separation inLa1−xSrxCoO

et al. 2003

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“…Doping with a divalent element results in the appearance of Mn 4+ ions, ferromagnetic ordering, and the colossal magnetoresistance (CMR) observed in a vicinity of Curie temperature T C . The Mn 4+ ions can also appear due to La or Mn vacancies [4][5][6]. The value of T C is believed to be an increasing function of the number of Mn…”

Section: Introductionmentioning

confidence: 99%

Effect of yttrium doping on magnetic and elastic properties of La0.8Sr0.2MnO3 single crystal

Zainullina

Bebenin

Ustinov

et al. 2009

Journal of Alloys and Compounds

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“…It is seen from Fig. 1 [13]. In the rhombohedral samples, the number of vacancies in the Mn sublattice can be higher than the number of vacancies in the La sublattice by a factor of 2-4.…”

Section: Magnetic Propertiesmentioning

confidence: 86%

Nonuniform paramagnetic state in nonstoichiometric lanthanum manganites La1–x Mn1–y O3

Arbuzova

Наумов

2016

Phys. Solid State

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The magnetic properties of nonstoichiometric lanthanum manganites La 1 -x Mn 1 -y O 3 have been studied in the temperature range 80 K < T < 650 K. The Curie temperature T C changes nonmonotonically as the number of Mn 4+ ions increases. In the paramagnetic region, there exist isolated Mn ions and magnetic polarons which can be conserved to T ≤ 4T C , independent of the lattice symmetry. In the T C < T < T pol region, the temperature dependences of the magnetic susceptibility are nonlinear and can be described by the Curie law with a temperature-dependent Curie constant C. The sample has been prepared having a composition near the O' → O structural transition; the spontaneous magnetization of the sample at T ≤ 1.6T C is associated to correlated polarons forming due to the double exchange in chains of the E-type antiferromagnetic phase.

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Optical spectroscopy of phase separation in LaxMnO3

Cited by 19 publications

References 11 publications

Spin states and phase separation inLa1−xSrxCoO

Spin states and phase separation inLa1−xSrxCoO

Effect of yttrium doping on magnetic and elastic properties of La0.8Sr0.2MnO3 single crystal

Nonuniform paramagnetic state in nonstoichiometric lanthanum manganites La1–x Mn1–y O3

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