Neutron spectroscopic study of crystal-field excitations and the effect of the crystal field on dipolar magnetism in LiRF4 (R = Gd, Ho, Er, Tm, and Yb)

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Babkevich P, Finco A, Jeong M, Piazza BD, Kovacevic I, Klughertz G, Kraemer KW, Kraemer C, Adroja DT, Goremychkin E, Unruh T, Straessle T, Di Lieto A, Jensen J, Ronnow HM
Zeitschrift: Physical Review B
Verlag: AMER PHYSICAL SOC
Jahr der Veröffentlichung: 2015
Band: 92
Heftnummer: 14
ISSN: 1098-0121


Abstract


We present a systematic study of the crystal-field interactions in the LiRF4 (R = Gd, Ho, Er, Tm, and Yb) family of rare-earth magnets. Using detailed inelastic neutron scattering measurements, we have been able to quantify the transition energies and wave functions for each system. This allows us to quantitatively describe the high-temperature susceptibility measurements for the series of materials and make predictions based on a mean-field approach for the low-temperature thermal and quantum phase transitions. We show that coupling between crystal field and phonon states leads to line-shape broadening in LiTmF4 and level splitting in LiYbF4. Furthermore, using high-resolution neutron scattering from LiHoF4, we find anomalous broadening of crystal-field excitations which we attribute to magnetoelastic coupling.



FAU-Autoren / FAU-Herausgeber

Unruh, Tobias Prof. Dr.
Professur für Nanomaterialcharakterisierung (Streumethoden)


Autor(en) der externen Einrichtung(en)
École Polytechnique Fédérale de Lausanne (EPFL)
Niels Bohr Institute / Niels Bohr Institutet
Paul Scherrer Institute (PSI)
Rutherford Appleton Laboratory
Universität Bern
University of Pisa / Università di Pisa (UniPi)


Zitierweisen

APA:
Babkevich, P., Finco, A., Jeong, M., Piazza, B.D., Kovacevic, I., Klughertz, G.,... Ronnow, H.M. (2015). Neutron spectroscopic study of crystal-field excitations and the effect of the crystal field on dipolar magnetism in LiRF4 (R = Gd, Ho, Er, Tm, and Yb). Physical Review B, 92(14). https://dx.doi.org/10.1103/PhysRevB.92.144422

MLA:
Babkevich, P., et al. "Neutron spectroscopic study of crystal-field excitations and the effect of the crystal field on dipolar magnetism in LiRF4 (R = Gd, Ho, Er, Tm, and Yb)." Physical Review B 92.14 (2015).

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