Quadrupole ordering destruction and crossover in the Jahn–Teller compound TbVO4

Demidov, A.M.; Kolmakova, N. P.

doi:10.1016/j.physb.2005.03.027

Cited by 11 publications

(10 citation statements)

References 13 publications

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“…The effect of large external magnetic fields on TbVO 4 was studied only recently. Quantitative mean-field calculations [8] found that the JT distortion is suppressed when fields above 29 T are applied along the c axis of the sample, in good agreement with susceptibility measurements [9]. Diffraction experiments have so far not been carried out, as the required combination of high magnetic fields and x-ray diffraction equipment has only recently become available [14 -16].…”

mentioning

confidence: 57%

“…This effect was predicted by both qualitative [6,7] and quantitative [8,9] theories, but previous experiments [5,[9][10][11][12] observed only indirect signatures of this behavior.…”

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confidence: 67%

“…Our calculations closely follow those of [8,9] and will be published in full detail elsewhere. In particular, we have used crystal field parameter set 2 of [8], and a quadrupolar constant G 130 mK.…”

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confidence: 83%

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Direct Observation of the High Magnetic Field Effect on the Jahn-Teller State inTbVO4

Detlefs

Duc²,

Kazei³

et al. 2008

Phys. Rev. Lett.

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We report the first direct observation of the influence of high magnetic fields on the Jahn-Teller (JT) transition in TbVO(4). Contrary to spectroscopic and magnetic methods, x-ray diffraction directly measures the JT distortion; the splitting between the (311)/(131) and (202)/(022) pairs of Bragg reflections is proportional to the order parameter. Our experimental results are compared to mean-field calculations, taking into account all possible orientations of the grains relative to the applied field, and qualitative agreement is obtained.

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mentioning

confidence: 57%

“…This effect was predicted by both qualitative [6,7] and quantitative [8,9] theories, but previous experiments [5,[9][10][11][12] observed only indirect signatures of this behavior.…”

mentioning

confidence: 67%

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Direct Observation of the High Magnetic Field Effect on the Jahn-Teller State inTbVO4

Detlefs

Duc²,

Kazei³

et al. 2008

Phys. Rev. Lett.

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“…This is due to the strong dependence of the phase diagram on the angle between the magnetic field and the sample's c axis. 13 Our experiment thus shows that the magnetic field pulse modified the Jahn-Teller distortion in TbVO 4 , and that these changes can be detected using x-ray powder diffraction at a synchrotron source. A quantitative analysis of these data will be published elsewhere.…”

Section: Observation Of Field-induced Structural Changesmentioning

confidence: 55%

Synchrotron x-ray powder diffraction studies in pulsed magnetic fields

Frings¹,

Vanacken

Detlefs

et al. 2006

Review of Scientific Instruments

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X-ray powder diffraction experiments under pulsed magnetic fields were carried out at the DUBBLE beamline ͑BM26B͒ at the ESRF. A mobile generator delivered 110 kJ to the magnet coil, which was sufficient to generate peak fields of 30 T. A liquid He flow cryostat allowed us to vary the sample temperature accurately between 8 and 300 K. Powder diffraction patterns of several samples were recorded using 21 keV monochromatic x-rays and an on-line image plate detector. Here we present the first results on the suppression of the Jahn-Teller structural distortion in TbVO 4 by magnetic field. These data clearly demonstrate the feasibility of x-ray powder diffraction experiments under pulsed magnetic fields with relatively inexpensive instrumentation.

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“…TbVO 4 (TV) is a member of the rare-earth vanadates with the tetragonal zircon structure (D 19 4h ) that have been studied widely because of the diverse crystallographic and magnetic phase transitions which occur at low temperatures [12][13][14][15]. However, the study on magneto-optical properties of TV crystal at room temperature has not been reported in details.…”

Section: Introductionmentioning

confidence: 99%