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11 Result(s)

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  1. No Access

    Article

    Phase transition in YbAl3C3

    170Yb Mössbauer spectroscopy, temperature dependent X-ray, magnetisation and specific heat data are presented in the hexagonal intermetallic YbAl3C3, in order to shed light on the isostructural...

    S. K. Dhar, P. Manfrinetti, M. L. Fornasini, P. Bonville in The European Physical Journal B (2008)

  2. No Access

    Article

    Magnetic properties of YbNi5 from 170Yb Mössbauer and magnetisation measurements

    From Yb170 Mössbauer measurements on YbNi5, we establish: the Yb3+ ground state Kramers doublet is well isolated and has uniaxial anisotropy, the compound magnetically orders at 0.55 K, the Yb3+ moments are ali...

    J. A. Hodges, P. Bonville, M. Ocio in The European Physical Journal B (2007)

  3. No Access

    Article

    Magnetic structures and crystal field in the heavy electron materials YbAgGe and YbPtIn

    We have examined the magnetic properties of the heavy electron compounds YbAgGe and YbPtIn by 170Yb Mössbauer spectroscopy down to 0.1 K, and the crystal field properties of YbAgGe by Perturbed Angular Correlati...

    P. Bonville, M. Rams, K. Królas, J.-P. Sanchez… in The European Physical Journal B (2007)

  4. No Access

    Article

    Magnetic properties of Yb Mo O and Gd Mo O from rare earth Mössbauer measurements

    Using 170Yb and 155Gd Mössbauer measurements down to ∼ 0.03 K, we have examined the semiconducting pyrochlore Yb2Mo2O7 where the Mo intra-sublattice interaction is anti-ferromagnetic and the metallic pyrochlore G...

    J.A. Hodges, P. Bonville, A. Forget… in The European Physical Journal B - Condense… (2003)

  5. No Access

    Article

    Effective hyperfine temperature in frustrated Gd 2Sn 2O 7: two level model and 155Gd Mössbauer measurements

    Using 155Gd Mössbauer spectroscopy down to 27 mK, we show that, in the geometrically frustrated pyrochlore Gd2Sn2O7, the Gd3+ hyperfine levels are populated out of equilibrium. From this, we deduce that the hyper...

    E. Bertin, P. Bonville, J.-P. Bouchaud… in The European Physical Journal B - Condense… (2002)

  6. No Access

    Article

    Incommensurate modulated magnetic structure in orthorhombic EuPdSb

    Orthorhombic EuPdSb is known to undergo two magnetic transitions, at 12 K and at T N≃ 18 K, and in phase III (T < 12 K), single crystal magnetisation data have shown that the spin structure is collinear antiferro...

    P. Bonville, J.A. Hodges, M. Shirakawa… in The European Physical Journal B - Condense… (2001)

  7. No Access

    Article

    Non-Langevin behaviour of the uncompensated magnetization in nanoparticles of artificial ferritin

    The magnetic behaviour of nanoparticles of antiferromagnetic artificial ferritin has been investigated by 57Fe Mössbauer absorption spectroscopy and magnetization measurements, in the temperature range 2.5-250 K ...

    C. Gilles, P. Bonville, K.K.W. Wong, S. Mann in The European Physical Journal B - Condense… (2000)

  8. No Access

    Article

    Er spin relaxation and magnetic coupling in ErNi B C, Er(Ni Co ) B C and Er Y Ni B C from Er Mössbauer measurements

    In a previous study of the Er3+ spin relaxation rate in ErNi2B2C (Bonville et al., Z. Phys. B 101, 511 (1996)), we found that its thermal dependence showed an anomaly at the superconducting transition temperature...

    J.A. Hodges, P. Bonville, H. Takeya… in The European Physical Journal B - Condense… (2000)

  9. No Access

    Article

    Heavy electron YBNi2B2C and giant exchange YbNiBC: 170Yb Mössbauer spectroscopy and magnetization studies

    We report low temperature 170Yb Mössbauer spectroscopy and magnetization measurements on two tetragonal non-superconducting quaternary borocarbides, YbNi2B2C and YbNiBC, and present LIII edge X-ray absorption dat...

    P. Bonville, J. A. Hodges, Z. Hossain… in The European Physical Journal B - Condense… (1999)

  10. No Access

    Article

    Nanoparticles of: Synthesis and superparamagnetic properties

    By using oil in water micelles, cobalt ferrite particles having an average diameter around 3 nm were synthetised. These nanoparticles are characterized by the presence of cation vacancies and no Fe(II) is obse...

    A.T. Ngo, P. Bonville, M.P. Pileni in The European Physical Journal B - Condense… (1999)

  11. No Access

    Article

    Low temperature Kondo reduction of quadrupolar and magnetic moments in the YbCu Al series

    We present measurements in the YbCu5-xAlx series, down to the 50 mK range, using 170Yb Mössbauer absorption spectroscopy and magnetisation measurements. In this series, the hybridisation between the Yb 4 f electr...

    P. Bonville, E. Vincent, E. Bauer in The European Physical Journal B - Condense… (1999)