The <sup>11</sup>B Nuclear Magnetic Resonance in CeB<sub>6</sub> Single Crystal

Kawakami, Masayuki; Kunii, S.; Mizuno, Kaoru; Sugita, Mitsuharu; Kasuya, T.; Kume, K.

doi:10.1143/jpsj.50.432

Cited by 33 publications

(18 citation statements)

References 5 publications

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“…The spectrum is composed of sharp lines, and we can estimate the nuclear quadrupole frequency as 0.53 MHz from the splitting of the satellite lines, in good agreement with the results on CeB 6 [4] and LaB 6 [17]. -axis, respectively.…”

Section: Resultssupporting

confidence: 87%

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¹¹B NMR Study of Ce_xLa_1–xB₆

Magishi

Kawakami

Saito

et al. 2002

Zeitschrift Für Naturforschung A

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We have carried out 11 B NMR experiments on single crystals of Ce La 1 B 6 in order to investigate the nature of phase IV. The NMR spectrum undergoes an appreciable broadening by the internal magnetic field as is lowered in phase IV, and the nuclear spin-lattice relaxation rate, 1 1 , exhibits a sharp peak around the phase I-IV boundary. Also, in phase III the amplitude of the antiferromagnetic (AFM) moment is large enough even just below the phase IV-III transition, which suggests that the AFM moment grows considerably in phase IV. These results support the view that phase IV is an AFM ordered phase.

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Section: Resultssupporting

confidence: 87%

“…The splitting of the central transition line, which is the same as CeB 6 [4], arises from the ferromagnetic moments induced at the Ce sites. For…”

Section: Resultsmentioning

confidence: 99%

¹¹B NMR Study of Ce_xLa_1–xB₆

Magishi

Kawakami

Saito

et al. 2002

Zeitschrift Für Naturforschung A

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“…[7][8][9][10][11][12][13][14][15] One is an antiferroquadrupole (AFQ) order at T Q = 3.3 K and the other is an antiferromagnetic (AFM) order at T N = 2.3 K. 16,17 One of the anomalous features of these ordered phases is that the AFQ phase is stabilized and T Q increases in magnetic fields. [9][10][11][12][13][14][15][16][17][18] It is now considered that the main origin of this anomalous behavior lies in the antiferro-type interaction between the magnetic octupole moments induced by the magnetic field. 5,[19][20][21][22] This is well evidenced by the analysis of the NMR line splittings.…”

Section: Introductionmentioning

confidence: 99%

“…5,[19][20][21][22] This is well evidenced by the analysis of the NMR line splittings. [12][13][14][19][20][21][22][23] Resonant x-ray diffraction (RXD) is a promising probe to observe ordered structures of higher rank multipoles. [24][25][26] With respect to the observation of the AFQ order in CeB 6 , several works, including nonresonant diffraction, have already been reported.…”

Section: Introductionmentioning

confidence: 99%

Antiferroquadrupole order and magnetic field induced octupole in CeB6

et al. 2012

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We have studied the antiferroquadrupole ordered phase of CeB 6 in magnetic fields by resonant x-ray diffraction. By analyzing the significant change in the energy spectrum on reversing the field direction along [1 1 0], we have deduced field dependencies of the antiferro components of magnetic dipole, electric quadrupole, and magnetic octupole moments which are simultaneously induced in the Ce 4f orbital with a propagation vector (1 2 , 1 2 , 1 2). The data treatments are based on theoretically calculated spectral functions. The existence of the field-induced octupole is also concluded for other field directions. We also show direct evidence for the formation of a linear-combination-type antiferroquadrupole order parameter in magnetic fields, which is expressed as αO yz + βO zx + γ O xy and changes continuously with the field direction (α,β,γ). A possibility of observing the quadrupolar fluctuation is also pointed out.

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“…Introduction. -Cerium hexaboride, with a simple cubic structure of the CeB6 type is a very interesting compound in the sense that it shows the most typical "dense Kondo behaviour" (1), (2) and very peculiar magnetic properties revealed by magnetization (3), specific heat (4), resistivity (1), (2), neutron diffraction (5), (6), (7) and NMR (8) measurements. The magnetic phase diagram of CeB6 as a function of temperature and magnetic field is shown in figure 1.…”

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confidence: 99%