Magnetic anisotropy in the paramagnetic phase of TbAl2

Moral, A. del; Arnaudas, J.I.; Cockaday, J.S.; Lee, E.W.

doi:10.1016/0304-8853(84)90326-3

Cited by 16 publications

(7 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the anisotropy observed in FM phase can also be described by the fourth and second rank susceptibilities as in the PM phase. The similar type of anisotropy observed below and above T C was also reported in a ferromagnetic crystal, TbAl 2 , where the anisotropy was caused by defects and higher rank paramagnetic susceptibilities [44]. In the case of uranium monosulfide, it has been reported that the crystal undergoes a rhombohedral distortion along [111] crystallographic direction [15,18,19] below T C .…”

Section: Fig 2 (Color Online)supporting

confidence: 73%

“…The anisotropic behavior of US crystals in the FM phase is related to strong magneto-crystalline anisotropy and spin-orbit coupling emerging from its 5f -electronic configuration. The observed magnetic anisotropy in the PM state might be due to the symmetry change from both anisotropic distribution of defects in the crystal and quadrupolar interactions [39,44]. It would be interesting to compare qualitatively the anisotropic behaviors in these two phases.…”

Section: Fig 2 (Color Online)mentioning

confidence: 97%

See 1 more Smart Citation

Magnetic anisotropy in uranium monosulfide probed by magnetic torque measurements

Poudel

Jeffries²,

Gofryk³

2021

Phys. Rev. B

View full text Add to dashboard Cite

We have studied the magnetic torque in uranium monosulfide (US) single crystals to explore the magnetic anisotropy in this material. Uranium monosulfide crystallizes in cubic, NaCl-type of crystal structure and exhibits the largest magneto-crystalline anisotropy observed in cubic systems. By performing detailed torque measurements we observe a strongly anisotropic behavior in the paramagnetic phase due to crystal defects and quadrupolar pair interactions. Our studies also confirm the presence of a large anisotropy in the ferromagnetic state of the US system with the <100>, <111>, and <110> directions being hard, easy, and intermediate axis, respectively. Furthermore, the anisotropy in the paramagnetic phase shows similar characteristics to the anisotropy observed in the ferromagnetic phase, as characterized by second and fourth rank susceptibility terms. The similarity of the anisotropic behaviors in paramagnetic and ferromagnetic phases is the consequence of strong magneto-elastic properties in this system, which possibly lead to the rhombohedral structural distortion, not only in the ferromagnetic phase but also in the paramagnetic phase (induced by applied magnetic field).

show abstract

Section: Fig 2 (Color Online)supporting

confidence: 73%

Section: Fig 2 (Color Online)mentioning

confidence: 97%

Magnetic anisotropy in uranium monosulfide probed by magnetic torque measurements

Poudel

Jeffries²,

Gofryk³

2021

Phys. Rev. B

View full text Add to dashboard Cite

show abstract

“…Indeed, the torque curves shown in the upper panels become asymmetric with respect to 90 • rotations below T h . We note that the observed four-fold oscillations τ 4φ (and higher-order terms) arise primarily from the nonlinear susceptibilities [23]. The presence of the two-fold oscillation, which follows the functional form τ 2φ = A 2φ cos 2φ, clearly demonstrates that χ ab = 0, whereas χ aa = χ bb .…”

mentioning

confidence: 71%

Rotational Symmetry Breaking in the Hidden-Order Phase of URu ₂ Si ₂

Okazaki

Shibauchi

Shi

et al. 2011

Science

273

331

View full text Add to dashboard Cite

A second-order phase transition is characterized by spontaneous symmetry breaking. The nature of the broken symmetry in the so-called "hidden-order" phase transition in the heavy-fermion compound URu(2)Si(2), at transition temperature T(h) = 17.5 K, has posed a long-standing mystery. We report the emergence of an in-plane anisotropy of the magnetic susceptibility below T(h), which breaks the four-fold rotational symmetry of the tetragonal URu(2)Si(2). Two-fold oscillations in the magnetic torque under in-plane field rotation were sensitively detected in small pure crystals. Our findings suggest that the hidden-order phase is an electronic "nematic" phase, a translationally invariant metallic phase with spontaneous breaking of rotational symmetry.

show abstract

“…Indeed, the torque curves shown by the upper panels apparently become asymmetric with respect to 90 • rotations below T h . We note that the fourfold oscillations τ 4φ (and higher-order terms) observed for all temperatures arise primarily from the higher-order nonlinear susceptibilities [36]. We therefore focus our attention on the twofold oscillation.…”

Section: Twofold Oscillation In the In-plane Magnetic Torquementioning

confidence: 97%

Thermodynamic evidence for broken fourfold rotational symmetry in the hidden-order phase of URu2Si2

Shibauchi

Matsuda

2012

Physica C: Superconductivity

View full text Add to dashboard Cite

Despite more than a quarter century of research, the nature of the second-order phase transition in the heavy-fermion metal URu 2 Si 2 remains enigmatic. The key question is which symmetry is being broken below this "hidden order" transition. We review the recent progress on this issue, particularly focusing on the thermodynamic evidence from very sensitive micro-cantilever magnetic torque measurements that the fourfold rotational symmetry of the underlying tetragonal crystal is broken. The angle dependence of the torque under in-plane field rotation exhibits the twofold oscillation term, which sets in just below the transition temperature. This observation restricts the symmetry of the hidden order parameter to the E + -or E − -type, depending on whether the time reversal symmetry is preserved or not.

show abstract

Magnetic anisotropy in the paramagnetic phase of TbAl2

Cited by 16 publications

References 5 publications

Magnetic anisotropy in uranium monosulfide probed by magnetic torque measurements

Magnetic anisotropy in uranium monosulfide probed by magnetic torque measurements

Rotational Symmetry Breaking in the Hidden-Order Phase of URu ₂ Si ₂

Thermodynamic evidence for broken fourfold rotational symmetry in the hidden-order phase of URu2Si2

Contact Info

Product

Resources

About

Magnetic anisotropy in the paramagnetic phase of TbAl2

Cited by 16 publications

References 5 publications

Magnetic anisotropy in uranium monosulfide probed by magnetic torque measurements

Magnetic anisotropy in uranium monosulfide probed by magnetic torque measurements

Rotational Symmetry Breaking in the Hidden-Order Phase of URu 2 Si 2

Thermodynamic evidence for broken fourfold rotational symmetry in the hidden-order phase of URu2Si2

Contact Info

Product

Resources

About

Rotational Symmetry Breaking in the Hidden-Order Phase of URu ₂ Si ₂