Influence of Nd on the magnetic properties of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Nd</mml:mi></mml:mrow><mml:mrow><mml:mn>1</mml:mn><mml:mi>−</mml:mi><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ca</mml:mi></mml:mrow><mml:mrow><mml:mi>x</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">MnO</mml:mi><

Dupont, F.; Millange, Franck; Brion, S. de; Jànossy, A.; Chouteau, G.

doi:10.1103/physrevb.64.220403

Cited by 34 publications

(7 citation statements)

References 14 publications

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“…Similarly to the Nd 0.5 Sr 0.5 MnO 3 case, the high temperature phase phonons of Nd 0.5 Ca 0.5 MnO 3 persist below T N indicating the occurrence of phase separation at low temperature and confirming a previous NMR study of La 0.5 Ca 0.5 MnO 3 [30]. The observation of the room temperature phonons below T N is also consistent with the Brillouin scattering study [21] which is, in contrast to an ESR study [43], strongly indicative of the presence of ferromagnetic inhomogeneities in the charge ordered as well as antiferromagnetic phases [21]. It would also confirm the assertion that charge order could occur in ferromagnetic regions [11] if the ferromagnetic regime phonons, above T co , reflect distortions due to some charge ordering.…”

Section: Camnosupporting

confidence: 89%

Micro-Raman study and phase transitions of Nd_0.5Ca_0.5MnO₃

Jandl¹,

Mukhin²,

Ivanov³

et al. 2006

J. Phys.: Condens. Matter

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A micro-Raman study of high quality Nd0.5Ca0.5MnO3 single crystals is presented, with temperature variation. Twelve Ag and eight B2g Raman active modes (simplified symmetry: Pmma space group) have been observed in resonance conditions and compared to the parent and charge ordered compound phonons. The detected Nd0.5Ca0.5MnO3 phonons retrace the magnetic and structural temperature evolutions in the paramagnetic, charge ordered (Tco∼250 K) and antiferromagnetic orbital ordered (TN∼160 K) regimes. In particular, at T

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Section: Camnosupporting

confidence: 89%

Micro-Raman study and phase transitions of Nd_0.5Ca_0.5MnO₃

Jandl¹,

Mukhin²,

Ivanov³

et al. 2006

J. Phys.: Condens. Matter

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“…In the Mn-doped samples, besides the coexistence of superconductivity and AFM order, ESR measurements probe paramagnetic signal in a wide range of temperatures, suggesting that both the paramagnetism and antiferromagnetism can coexist with superconductivity. The ESR resonance occurs at lower external magnetic field in Ni-doped samples compared to that in Mn-doped samples, suggesting the occurrence of ferromagnetic interaction in Ni-doped samples [37][38][39]. It is well known that the occurrence of ferromagnetic interaction is inimical to the superconductivity.…”

Section: Discussionmentioning

confidence: 94%

Contrasting effects of magnetic ions on the superconductivity in Tl_0.4K_0.4Fe_2−y−xM_xSe₂(M= Mn and Ni)

Yu¹,

Zhang²,

Zhang³

et al. 2012

New J. Phys.

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The transport and magnetic properties together with the superconductivity of Tl 0.4 K 0.4 Fe 2−y−x M x Se 2 (M = Mn and Ni) single crystals are studied. On the transport side, both Mn doping and Ni doping lead to a decrease of charge carrier density. However, contrasting effects on superconductivity are found, i.e. substitution of Fe by Ni results in a drastic depression of the onset superconducting transition temperature (T onset c ), while the T onset c value remains nearly unchanged in Mn-doped samples. A remarkable ferromagnetic interaction is found in Ni-doped samples but is absent in Mn-doped samples. The present results suggest that the magnetic pair-breaking effect alone cannot explain the different behavior of depression of superconductivity in Mn-doped and Ni-doped samples. The occurrence of ferromagnetic interaction is responsible for the rapid decrease of T onset c in Ni-doped samples.

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“…Besides, recent Electron Spin Resonance measurements on the same Nd 0.5 Ca 0.5 MnO 3 compound [22] are in favor of the second hypothesis: the charge ordered phase is characterized by strong magnetic fluctuations with no long range magnetic order.…”

Section: Discussionmentioning

confidence: 93%