Transport properties, magnetic ordering, and hyperfine interactions in Fe-doped<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">La</mml:mi></mml:mrow><mml:mrow><mml:mn>0.75</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ca</mml:mi></mml:mrow><mml:mrow><mml:mn>0.25</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">MnO</mml:

Ogale, Satishchandra; Shreekala, R.; Bathe, Ravi; Date, S. K.; Patil, S. F.; Hannoyer, B.; Petit, F.; Marest, G.

doi:10.1103/physrevb.57.7841

Cited by 152 publications

(74 citation statements)

References 31 publications

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“…It is obvious that the Curie temperature decreases with increasing Fe doping level. This is consistent with previous studies 20 which found that Fe-doped samples showed an obvious decrease in Curie temperature, because of the average Fe-Fe separation approaching the size of the charge carriers (polarons). 21 The bottom insets in Fig.…”

Section: Resultssupporting

confidence: 93%

Structural, Magnetic and Dielectric Properties of [(CH3)2NH2]Fe x Mn1−x (HCOO)3

Zhao

Huang

et al. 2017

Journal of Elec Materi

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Section: Resultssupporting

confidence: 93%

Structural, Magnetic and Dielectric Properties of [(CH3)2NH2]Fe x Mn1−x (HCOO)3

Zhao

Huang

et al. 2017

Journal of Elec Materi

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“…The intensity of this component (20-40%) suggests that an appreciable fraction of the Fe 3+ ions at LNT exists in sites which are almost undistorted due to charge delocalization. The relatively low intensity (20%) of this component at x = 0.05 is due to the fact that at this concentration the Fe-Fe separation is compatible with that reported for Fe-doped La 0.75 Ca 0.25 MnO 3 at the threshold Fe concentration of 0.045 at which anomalous behavior is observed in the transport properties of the manganite [14,18]. At this concentration, the Fe-Fe separation is reported to be about three lattice parameters (12 Å), where polarons of this size develop, and the observed transition in resistivity behavior is associated with the localization-delocalization transition for the charge carrier-polaron complex.…”

Section: Magneticsupporting

confidence: 81%

Polaronic and charge ordering effects in Pr 0.5 Sr 0.5 Mn 1− x Fe x O 3

et al. 2010

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In this work we report the results of X-ray diffraction and Mössbauer spectroscopy for the systems Pr 0.5 Sr 0.5 Mn 1−x Fe x O 3 (with x = 0. 05, 0.10, 0.15, 0.20, 0.25, 0.30). XRD patterns indicated that all samples were single phase with slightly distorted orthorhombic symmetry. Room temperature Mössbauer spectra are all quadrupole split, indicating paramagnetic relaxation of the Fe moment for all values of Fe concentrations. The spectra are fitted with two doublet components associated with Fe 3+ ions in octahedral sites with different distortions. Mössbauer spectra recorded at liquid nitrogen temperature for this system also indicate paramagnetic relaxation of the Fe moments down to liquid nitrogen temperature (LNT). In these spectra a third quadrupole component with quadrupole splitting close to zero develops. This component is associated with the delocalization of the charge carriers and the consequent disappearance of lattice distortions produced by the polaronic effect at room temperature. The component with the high quadrupole splitting (0.81 to 1.07 mm/s) results from Jahn-Teller distortion as a consequence of charge ordering transition at low temperature.

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“…In order to reveal the mechanism of the magnetotransport, some authors [7][8][9][10][11] have investigated the Fe doping effects on the structural, magnetic and magneto-transport properties of La 1-x Ca x Mn 1-y Fe y O 3 and found that the dopant Fe leads to a weakness of the ferromagnetism at low temperatures and modifies the magnetoresistance effects.…”

Section: Introductionmentioning

confidence: 99%

Fe doping effects on the structural and magnetic properties in Pr _0.5 Sr _0.5 Mn _1−x Fe _x O ₃ with 0 ≤ x ≤ 0.3

Ammar

Zouari

Cheikhrouhou

2004

phys. stat. sol. (c)

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Structural and magnetic properties of Pr 0.5 Sr 0.5 Mn 1-x Fe x O 3 (0.0 ≤ x ≤ 0.3) powder samples have been investigated. Powder X-ray diffraction showed that all our synthesized samples are single phase and crystallize in the orthorhombic symmetry with Imma space group. Fe doping leads to a weakness of the ferromagnetic (FM) ordering at low temperature. With increasing Fe content, the Curie temperature T c decreases.

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Transport properties, magnetic ordering, and hyperfine interactions in Fe-dopedLa0.75Ca0.25MnO

Cited by 152 publications

References 31 publications

Structural, Magnetic and Dielectric Properties of [(CH3)2NH2]Fe x Mn1−x (HCOO)3

Structural, Magnetic and Dielectric Properties of [(CH3)2NH2]Fe x Mn1−x (HCOO)3

Polaronic and charge ordering effects in Pr 0.5 Sr 0.5 Mn 1− x Fe x O 3

Fe doping effects on the structural and magnetic properties in Pr _0.5 Sr _0.5 Mn _1−x Fe _x O ₃ with 0 ≤ x ≤ 0.3

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Transport properties, magnetic ordering, and hyperfine interactions in Fe-dopedLa0.75Ca0.25MnO

Cited by 152 publications

References 31 publications

Structural, Magnetic and Dielectric Properties of [(CH3)2NH2]Fe x Mn1−x (HCOO)3

Structural, Magnetic and Dielectric Properties of [(CH3)2NH2]Fe x Mn1−x (HCOO)3

Polaronic and charge ordering effects in Pr 0.5 Sr 0.5 Mn 1− x Fe x O 3

Fe doping effects on the structural and magnetic properties in Pr 0.5 Sr 0.5 Mn 1−x Fe x O 3 with 0 ≤ x ≤ 0.3

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Fe doping effects on the structural and magnetic properties in Pr _0.5 Sr _0.5 Mn _1−x Fe _x O ₃ with 0 ≤ x ≤ 0.3