Magnetic and Transport Properties of EuMnO3+x Substituted by Ca, Sr and Cr Ions

Troyanchuk, I. O.; Samsonenko, N. V.; Kasper, N. V.; Szymczak, H.

doi:10.1002/1521-396x(199703)160:1<195::aid-pssa195>3.0.co;2-m

Cited by 24 publications

(11 citation statements)

References 13 publications

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“…How ever, a decrease in the covalent component of the bond in manganites leads to a decrease in the ferromagnetic component regardless the Mn 3+ /Mn 4+ ratio. For example, the Curie point of weakly distorted La 0.7 Sr 0.3 MnO 3 is 380 K, while the Curie point of Eu 0.7 Sr 0.3 MnO 3 is lower by 80 K [18]. In the last case, lattice distortions are substantially larger, while the covalent component is much smaller.…”

Section: Sample Preparation and Experimental Techniquementioning

confidence: 96%

Magnetic ordering in Ln 0.7Sr0.3Mn0.85Sb0.15O3 (Ln = La, Nd, Sm, Eu)

et al. 2015

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The crystal structure and magnetic properties of stoichiometric compounds Ln 0.7 Sr 0.3 Mn 0.85 Sb 0.15 O 3 , in which manganese ions are in a trivalent state, have been investigated. No coop erative orbital ordering has been found in the Ln = La composition, but structural parameters of the Ln = Nd composition indicate Jahn-Teller distortions. It has been shown that, as the ionic radius of lanthanide (Ln) decreases, structural distortions of the MnO 6 octahedron increase and the ferromagnetic component weakens due to a decrease in hybridization of manganese and oxygen orbitals. An increase in the covalent component of the chemical bond along with the orbital disorder promotes an increase in the role of positive superex change interactions Mn 3+ -O-Mn 3+ .

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Section: Sample Preparation and Experimental Techniquementioning

confidence: 96%

Magnetic ordering in Ln 0.7Sr0.3Mn0.85Sb0.15O3 (Ln = La, Nd, Sm, Eu)

et al. 2015

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“…These values agree well with data reported by other researchers. [33][34][35][36] With an increase of Mn in the samples, the "negative magnetization" in the ZFC curve disappears, as shown in Fig. 6.…”

Section: Magnetic Propertiesmentioning

confidence: 99%

Synthesis, structure and magnetic properties of (Eu_1−xMn_x)MnO_3−δ

et al. 2017

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“…8) It has been found in the specimens with x around 0.4, however, that application of a magnetic field (H) induces the insulator-to-metal transition at low temperature. [9][10][11][12] The magnetic field-induced change of the resistivity () exceeds six orders of magnitude (10 6 ) at 12 K. The transition field is about 12 kOe at 12 K. There is no evidence in the -T curve that the charge ordering occurs. The IM transition is accompanied by a transition from a low magnetization phase ( ¼ 25 emu/g) to a high magnetization phase (85 emu/g).…”

Section: Introductionmentioning

confidence: 99%

Structural Change on the Magnetic Field-Induced Insulator-to-Metal Transition in Distorted Perovskite Eu_0.6Sr_0.4MnO₃

et al. 2004

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Structural feature of Eu 0:6 Sr 0:4 MnO 3 through the magnetic-field-induced insulator-to-metal (IM) transition has been investigated by X-ray powder diffraction in a magnetic field using synchrotron radiation. No superlattice reflections due to the charge and orbital ordering are detected in the insulator phase down to 20 K. Both of the insulator phase and the induced metal phase are proved to be in orthorhombic structure with Pnma space group, and thus a change of the crystal symmetry is not detected on the IM transition. However, the lattice constants abruptly increase and the reflection intensities abruptly change through the transition. These suggest a rotation of MnO 6 octahedron in a manner to increase Mn-O-Mn angles. This structural change is consistent with a gain in electron transfer energy in the double exchange mechanism that stabilizes the metallic and ferromagnetic state. KEYWORDS: Eu 0:6 Sr 0:4 MnO 3 , magnetic field-induced insulator-to-metal transition, synchrotron radiation, Mn-O-Mn angle, double exchange mechanism

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Magnetic and Transport Properties of EuMnO3+x Substituted by Ca, Sr and Cr Ions

Cited by 24 publications

References 13 publications

Magnetic ordering in Ln 0.7Sr0.3Mn0.85Sb0.15O3 (Ln = La, Nd, Sm, Eu)

Magnetic ordering in Ln 0.7Sr0.3Mn0.85Sb0.15O3 (Ln = La, Nd, Sm, Eu)

Synthesis, structure and magnetic properties of (Eu_1−xMn_x)MnO_3−δ

Structural Change on the Magnetic Field-Induced Insulator-to-Metal Transition in Distorted Perovskite Eu_0.6Sr_0.4MnO₃

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Magnetic and Transport Properties of EuMnO3+x Substituted by Ca, Sr and Cr Ions

Cited by 24 publications

References 13 publications

Magnetic ordering in Ln 0.7Sr0.3Mn0.85Sb0.15O3 (Ln = La, Nd, Sm, Eu)

Magnetic ordering in Ln 0.7Sr0.3Mn0.85Sb0.15O3 (Ln = La, Nd, Sm, Eu)

Synthesis, structure and magnetic properties of (Eu1−xMnx)MnO3−δ

Structural Change on the Magnetic Field-Induced Insulator-to-Metal Transition in Distorted Perovskite Eu0.6Sr0.4MnO3

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Synthesis, structure and magnetic properties of (Eu_1−xMn_x)MnO_3−δ

Structural Change on the Magnetic Field-Induced Insulator-to-Metal Transition in Distorted Perovskite Eu_0.6Sr_0.4MnO₃