Crystal-field effect on anisotropic magnetic properties of CeT 2Al10 (T = Ru and Os)

K. Yutani; Y. Muro; J. Kajino; T. J. Sato; T. Takabatake

doi:10.1088/1742-6596/391/1/012070

Crystal-field effect on anisotropic magnetic properties of CeT ₂Al₁₀ (T = Ru and Os)

K. Yutani, Y. Muro, J. Kajino, T. J. Sato, T. Takabatake

Research output: Contribution to journal › Conference article › peer-review

12 Citations (Scopus)

Abstract

The magnetic susceptibility of single crystalline samples of CeT2Al10 (T=Ru, Os) showing unusual phase transitions at T0 27 K and 29 K, respectively, has been measured up to 700 K along the three principal axes of the orthorhombic structure. The crystal field analysis of the data led to the crystal field scheme with excited levels at 326 K and 530 K for T Ru and 433 K and 704 K for T Os. For the ground state, the butterfly-like wave function elongates along the b-axis in the distorted hexagon composed of Al(3) and Al(4) atoms in the b-c plane. This charge distribution allows the 4f electron state to hybridise with the 3p states of the Al(3) and Al(4) atoms. We propose that this hybridisation plays an important role in both the formation of the hybridisation gap and the enhancement of the antiferromagnetic ordering temperature.

Original language	English
Article number	012070
Journal	Journal of Physics: Conference Series
Volume	391
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/391/1/012070
Publication status	Published - 2012 Jan 1
Externally published	Yes
Event	International Conference on Strongly Correlated Electron Systems, SCES 2011 - Cambridge, United Kingdom Duration: 2011 Aug 29 → 2011 Sep 3

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Crystal-field effect on anisotropic magnetic properties of CeT 2Al10 (T = Ru and Os)",

abstract = "The magnetic susceptibility of single crystalline samples of CeT2Al10 (T=Ru, Os) showing unusual phase transitions at T0 27 K and 29 K, respectively, has been measured up to 700 K along the three principal axes of the orthorhombic structure. The crystal field analysis of the data led to the crystal field scheme with excited levels at 326 K and 530 K for T Ru and 433 K and 704 K for T Os. For the ground state, the butterfly-like wave function elongates along the b-axis in the distorted hexagon composed of Al(3) and Al(4) atoms in the b-c plane. This charge distribution allows the 4f electron state to hybridise with the 3p states of the Al(3) and Al(4) atoms. We propose that this hybridisation plays an important role in both the formation of the hybridisation gap and the enhancement of the antiferromagnetic ordering temperature.",

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T1 - Crystal-field effect on anisotropic magnetic properties of CeT 2Al10 (T = Ru and Os)

AU - Yutani, K.

AU - Muro, Y.

AU - Kajino, J.

AU - Sato, T. J.

AU - Takabatake, T.

PY - 2012/1/1

Y1 - 2012/1/1

N2 - The magnetic susceptibility of single crystalline samples of CeT2Al10 (T=Ru, Os) showing unusual phase transitions at T0 27 K and 29 K, respectively, has been measured up to 700 K along the three principal axes of the orthorhombic structure. The crystal field analysis of the data led to the crystal field scheme with excited levels at 326 K and 530 K for T Ru and 433 K and 704 K for T Os. For the ground state, the butterfly-like wave function elongates along the b-axis in the distorted hexagon composed of Al(3) and Al(4) atoms in the b-c plane. This charge distribution allows the 4f electron state to hybridise with the 3p states of the Al(3) and Al(4) atoms. We propose that this hybridisation plays an important role in both the formation of the hybridisation gap and the enhancement of the antiferromagnetic ordering temperature.

AB - The magnetic susceptibility of single crystalline samples of CeT2Al10 (T=Ru, Os) showing unusual phase transitions at T0 27 K and 29 K, respectively, has been measured up to 700 K along the three principal axes of the orthorhombic structure. The crystal field analysis of the data led to the crystal field scheme with excited levels at 326 K and 530 K for T Ru and 433 K and 704 K for T Os. For the ground state, the butterfly-like wave function elongates along the b-axis in the distorted hexagon composed of Al(3) and Al(4) atoms in the b-c plane. This charge distribution allows the 4f electron state to hybridise with the 3p states of the Al(3) and Al(4) atoms. We propose that this hybridisation plays an important role in both the formation of the hybridisation gap and the enhancement of the antiferromagnetic ordering temperature.

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