DOI > 10.5291/ILL-DATA.4-01-1219

This proposal is publicly available since 11/05/2017

Title

Low-energy dynamic magnetic response in Yb1-xTmxB12 compounds with thermoelectric enhancement

Abstract

(Yb,Tm)B12 is a new series of compounds based on the archetype Kondo insulator YbB12. The systems with moderate concentration of Tm demonstrate a considerable enhancement of the thermoelectric power that seems to be related to the magnetic properties of the material. Recently we have studied the high-energy (above 35 meV) dynamical magnetic response in (Yb,Tm)B12. Here we propose to trace the evolution of the spectral response in Tm0.93Tm0.07B12 and Tm0.85Tm0.15B12 in the energy range below ~25 meV, where the spin gap along with cooperative near-gap-edge excitations have been observed in the undoped YbB12. For the precise quantitative subtraction of Tm contribution we further plan to measure the samples Lu0.93Tm0.07B12 and Lu0.85Tm0.15B12, whose magnetic response represents the Tm contribution only. We estimate that 7 days of beam time in total are needed to collect the data with reasonable statistical accuracy, including the detailed study of the temperature dependence, measurements of the background, of the nonmagnetic reference compound LuB12, and of the vanadium standard.

Experimental Report

Download Experimental Report

Download Data

Please note that you will need to login with your ILL credentials to download the data.

Download Data

Data Citation

The recommended format for citing this dataset in a research publication is in the following format:

Nemkovski; ALEKSEEV Pavel A; IVANOV Alexandre; MIGNOT Jean Michel and ROLS Stephane. (2012). Low-energy dynamic magnetic response in Yb1-xTmxB12 compounds with thermoelectric enhancement. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.4-01-1219

Cited by

This data has not been cited by any articles.

Metadata

Experiment Parameters

  • Environment temperature

    5-250K

  • Experiment energy

    Ei=17meV, 36meV

  • Experiment res energy

    1-2 meV

Sample Parameters

  • Formula

    • Yb_{0.93}Tm_{0.07}^{11}B_{12}
    • Yb_{0.85}Tm_{0.15}^{11}B_{12}
    • Lu_{0.93}Tm_{0.07}^{11}B_{12}
    • Lu_{0.85}Tm_{0.15}^{11}B_{12}
    • Lu^{11}B_{12}

  • Consistence

    powder

  • Mass

    ~5000mg each

  • Space

    Fm3m

  • Unit cell A

    ~7.47

  • Unit cell B

    ~7.47

  • Unit cell C

    ~7.47

  • Alpha

    90

  • Beta

    90

  • Gamma

    90

Institut Laue-Langevin

Copyright © 2025

  • Access to data is governed by the ILL data policy.
  • ILL has partnered with DataCite as the registration agency for data persistent identifiers.