The crystal electric field effect in the distorted kagome lattice ferromagnet Nd.sub.3./sub.Ru.sub.4./sub.Al.sub.12./sub.

0539059 - FZÚ 2021 RIV JP eng C - Conference Paper (international conference)
Ishii, I. - Mizuno, T. - Kumano, S. - Umeno, T. - Suzuki, D. - Andreev, Alexander V. - Gorbunov, D.I. - Henriques, Margarida Isabel Sousa - Suzuki, T.
The crystal electric field effect in the distorted kagome lattice ferromagnet Nd₃Ru₄Al₁₂.
JPS Conference Proceedings. Vol. 30. Tokyo: Physical Society of Japan, 2020 - (Hotta, T.; Katsufuji, T.), s. 1-5, č. článku 011161. ISBN 978-4-89027-142-9. ISSN 2435-3892.
[International Conference on Strongly Correlated Electron Systems (SCES2019). Okayama (JP), 23.09.2020-28.09.2020]
R&D Projects: GA ČR(CZ) GA19-00925S; GA ČR(CZ) GJ19-07931Y
Institutional support: RVO:68378271
Keywords : Nd₃Ru₄Al₁₂ * Kagome lattice ferromagnet * crystal electric field
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)

The distorted kagome lattice compound Nd3Ru4Al12 shows a ferromagnetic phase transition below 39 K. Reduced Nd magnetic moments with two different values of 2.66 and 0.95 mB are aligned along the c-axis. Nd3Ru4Al12 has a crystal electric field (CEF) effect. It was previously reported that the CEF effect may affect the reduced magnetic moments. To clarify the 4f electronic state in Nd3Ru4Al12, we performed CEF analyses for the inverse magnetic susceptibility and magnetization. We proposed the CEF level scheme of which the inverse magnetic susceptibilities along both [100] and [001] axes are well reproduced. The ferromagnetic phase transition at TC along the c-axis can be explained by a simple CEF model. In contrast, reduced magnetic moments cannot be understood by the simple CEF model, because calculated magnetization curves are quite larger than the experimental data.
Permanent Link: http://hdl.handle.net/11104/0316813