Resonant X-Ray Scattering Study of Quadrupole-Strain Coupling in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mi>DyB</mml:mi><mml:mn>4</mml:mn></mml:msub></mml:math>

Ji, S.; Song, Changyong; Koo, Jin Young; Park, J.; Park, Yong Joon; Lee, K.-B.; Lee, Seongsu; Park, J.-G.; Kim, J. Y.; Cho, B. K.; Hong, Kwangpyo; Lee, C.-H.; Iga, Fumitoshi

doi:10.1103/physrevlett.99.076401

Cited by 25 publications

(6 citation statements)

References 14 publications

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“…6. 49) In TbB 4 , the A-type order appears at 44 K and B-type order is superimposed below 22 K. 24) In DyB 4 , the G-type order appears at 20.5 K, and the A-or Btype order, which has not been determined yet, is superimposed below 12.5 K. 22,50) The ground state of HoB 4 is represented by B+G. Other RB 4 compounds also show AFM orderings with q ¼ ð0; 0; 0Þ; because the moments align along the c-axis with a strong anisotropy, they are regarded as Ising systems.…”

Section: Rbmentioning

confidence: 98%

Competition of Magnetic and Quadrupolar Order Parameters in HoB₄

et al. 2008

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The successive magnetic phase transitions of HoB 4 with T N1 ¼ 7:1 K and T N2 ¼ 5:7 K have been investigated in detail by neutron and X-ray diffraction. Since Ho ions in the c-plane form a Shastry-Sutherland lattice, geometrical frustration has been expected in this compound. Below T N1 , HoB 4 exhibits an incommensurate antiferromagnetic order with q ¼ ð; ; 0 Þ ( ¼ 0:022, 0 ¼ 0:43), followed by a first-order transition at T N2 into a commensurate order with q ¼ ð0; 0; 0Þ, where four magnetic moments are antiferromagnetically coupled in a unit cell. After determining the magnetic structures of the two phases by neutron powder diffraction, we pay particular attention to diffuse scatterings responsible for the critical behavior. Very broad diffuse scatterings, extending almost to the zone boundary, are observed already in the paramagnetic phase at around q ¼ ð0; 0; 0Þ and ð0; 0; 1=2Þ with magnetic correlation lengths of < 10 Å . Below T N1 , a strong diffuse scattering develops in a more concentrated region at around q ¼ ð0; 0; 0 Þ with $ 30 Å , followed by the appearance of a Bragg peak at ð; ; 0 Þ. Simultaneously, a sharp Bragg peak corresponding to q ¼ ð0; 0; 0Þ also develops at ð1; 0; 1Þ upon diffuse scattering. This complex critical behavior is discussed from the viewpoint of competing order parameters of magnetic and quadrupolar origins. The striking resemblance of the critical behavior to that of HoB 2 C 2 with a square lattice of Ho is interpreted as a manifestation of a universality for a threedimensional system with competing magnetic and quadrupolar order parameters and a long-ranged RKKY interaction. It is considered that the microscopic difference in interionic interaction due to the difference in crystal structure becomes less prominent in the critical behavior as the correlation length becomes much larger than the lattice constant. On the other hand, the strong diffuse scattering in HoB 4 , which is hardly detected in HoB 2 C 2 , might be ascribed to geometrical frustration. The softening of the elastic constant in HoB 4 and HoB 2 C 2 is also discussed.

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Section: Rbmentioning

confidence: 98%

Competition of Magnetic and Quadrupolar Order Parameters in HoB₄

et al. 2008

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“…This difference presumably originates from quadrupolar and magnetic competition, which is known to be significantly stronger in HoB 4 than in DyB 4 [10]. Also, it should be noted that although TbB 4 [18,29] and GdB 4 [28] (as well as DyB 4 [15,16]) show complex magnetization behavior and quadrupolar moment frustration effects, the N eel temperatures are significantly higher, at 43 and 42 K with T N1 ¼ 20.3 K and T N2 ¼ 12.7 K, respectively. In addition, the spin orientations in the antiferromagnetic state are different for TbB 4 and GdB 4 [28,29].…”

Section: Resultsmentioning

confidence: 95%

“…Thus, the rare-earth ions in RB 4 materials form a Shastry-Sutherland (SS)-type geometrically frustrated lattice [20]. Such systems include HoB 4 [10e14], DyB 4 [15,16], ErB 4 [17], TbB 4 [18], and TmB 4 [19]. However, the competition between the quadrupolar and magnetic interactions in HoB 4 is expected to stronger than that in DyB 4 [10] HoB 4 is one of the interesting tetraborides, as it displays multistep magnetic transitions and non-collinear magnetism [21].…”

Section: Introductionmentioning

confidence: 99%

11B pulsed nuclear magnetic resonance study of HoB4

Kang

Kim

Lee

et al. 2015

Current Applied Physics

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“…Many works have been reported on the RB 4 series, where R ¼ Gd, Tb, Dy, and Ho. [114][115][116][117][118][119][120][121][122] Successive phase transitions commonly take place in RB 4 , and the quadrupolar interaction has been considered to play an important role. A characteristic magnetic structure realized in the anisotropic local crystal field and the geometrically frustrated lattice exhibit various kinds of interesting phase transition phenomena.…”

Section: Other Multipole Systems Studied By Rxsmentioning

confidence: 99%

Resonant X-ray Scattering Experiments on the Ordering of Electronic Degrees of Freedom

2013

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Resonant X-ray scattering (RXS) has been developed as a powerful technique for observing orderings of electronic degrees of freedom: charge, spin, orbital, and multipoles. After a brief introduction of the RXS technique, we review some RXS experiments on the orderings in d and f electron systems with a strong correlation between electrons. The basic concept of RXS and the recent developments of the technique are described in this review paper. We also present future prospects of the studies using RXS for users.

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Resonant X-Ray Scattering Study of Quadrupole-Strain Coupling inDyB4

Cited by 25 publications

References 14 publications

Competition of Magnetic and Quadrupolar Order Parameters in HoB₄

Competition of Magnetic and Quadrupolar Order Parameters in HoB₄

11B pulsed nuclear magnetic resonance study of HoB4

Resonant X-ray Scattering Experiments on the Ordering of Electronic Degrees of Freedom

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Resonant X-Ray Scattering Study of Quadrupole-Strain Coupling inDyB4

Cited by 25 publications

References 14 publications

Competition of Magnetic and Quadrupolar Order Parameters in HoB4

Competition of Magnetic and Quadrupolar Order Parameters in HoB4

11B pulsed nuclear magnetic resonance study of HoB4

Resonant X-ray Scattering Experiments on the Ordering of Electronic Degrees of Freedom

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Product

Resources

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Competition of Magnetic and Quadrupolar Order Parameters in HoB₄

Competition of Magnetic and Quadrupolar Order Parameters in HoB₄