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Title: Incommensurate to commensurate antiferromagnetism in CeRhAl 4 Si 2 : An Al 27 NMR study

Journal Article · · Physical Review B
 [1];  [1];  [1];  [1];  [2]; ORCiD logo [2]; ORCiD logo [2]; ORCiD logo [2]
  1. Japan Atomic Energy Agency (JAEA), Tokai (Japan). Advanced Science Research Center
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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27Al nuclear magnetic resonance (NMR) experiments have been performed on a single crystal of CeRhAl4Si2, which is an antiferromagnetic Kondo-lattice compound with successive antiferromagnetic transitions of TN1 = 14 K and TN2 = 9 K at zero external field. In the paramagnetic state, the Knight shifts, quadrupolar frequency, and asymmetric parameter of electrical field gradient on the Al sites have been determined, which have local orthorhombic symmetry. The transferred hyperfine coupling constants are also determined. Here, analysis of the NMR spectra indicates that a commensurate antiferromagnetic structure exists below TN2, but an incommensurate modulation of antiferromagnetic moments is present in the antiferromagnetic state between TN1 and TN2. The spin-lattice relaxation rate suggests that the 4f electrons behave as local moments at temperatures above TN1.

Research Organization:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22); USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1454995
Alternate ID(s):
OSTI ID: 1234136
Report Number(s):
LA-UR-17-22948; PRBMDO; TRN: US1901187
Journal Information:
Physical Review B, Vol. 93, Issue 1; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 2 works
Citation information provided by
Web of Science

References (19)

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Magnetic structure of the antiferromagnetic Kondo lattice compounds CeRhAl 4 Si 2 and CeIrAl 4 Si 2 journal June 2015
Spin Quenching and Magnetic Resonance journal November 1958
Ising-Type Ferromagnetic Ground State Driven by Anisotropic c – f Hybridization in CeRu 2 Al 2 B journal October 2014
Nuclear Magnetic Relaxation in Antiferromagnetics journal July 1956
Pressure-Induced Superconductivity in Quasi-2D CeRhIn 5 journal May 2000
Investigation of the physical properties of the tetragonal CeMAl 4 Si 2 (M = Rh, Ir, Pt) compounds journal December 2014
Anisotropic spin fluctuations and anomalies of nuclear quadrupole interactions in the itinerant antiferromagnet Np Co Ga 5 : Co 59 NMR and Ga 69 , 71 NMR/NQR studies journal July 2007
Ising-Type Magnetic Anisotropy Derived by Γ 7 (1) Crystal Electric Field Ground State in Tetragonal CeRu 2 Al 2 B: 11 B and 27 Al NMR Studies journal July 2012
Nuclear Spin-Lattice Relaxation in Magnetic Insulators journal February 1968
The Effect of Electron-Electron Interaction on the Nuclear Spin Relaxation in Metals journal April 1963
Pressure tuned ferromagnetism in CeRu 2 M 2 X (M = Al, Ga; X = B, C) journal July 2012
Anomalous Enhancement of Nuclear Spin Relaxation Rates of 109 Ag and 115 In at Low Temperatures in Cubic Γ 3 Ground-State System PrAg 2 In –First Observation of Octupole Fluctuations of f -Electrons– journal July 2006
Ferromagnetic Ground States with High Transition Temperatures in New Tetragonal Rare-Earth Compounds CeRu 2 Al 2 B and PrRu 2 Al 2 B journal April 2012
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Effect of Crystal-Fields on the Electron Paramagnetic Resonance and Nuclear Magnetic Resonance of Some Rare-Earth Compounds. II journal April 1977
Incommensurate magnetic structure of CeRhIn 5 journal December 2000

Figures / Tables (13)

FIG. 1.(p. 3)figure FIG. 1.
FIG. 2.(p. 5)figure FIG. 2.
FIG. 3.(p. 6)figure FIG. 3.
FIG. 4.(p. 6)figure FIG. 4.
FIG. 5.(p. 7)figure FIG. 5.
FIG. 6.(p. 7)figure FIG. 6.
FIG. 7.(p. 7)figure FIG. 7.
FIG. 10.(p. 8)figure FIG. 10.
FIG. 8.(p. 8)figure FIG. 8.
FIG. 9.(p. 8)figure FIG. 9.
FIG. 11.(p. 9)figure FIG. 11.
FIG. 12.(p. 10)figure FIG. 12.
FIG. 13.(p. 10)figure FIG. 13.

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Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
High Magnetic Field Science