Evolution of the magnetic properties and magnetic structures along the RmMIn3m+2 (R=Ce, Nd, Gd, Tb; M=Rh, Ir; and m=1,2) series of intermetallic compounds

Pagliuso, P. G.; García, D. J.; Miranda, E.; Granado, E.; Lora‐Serrano, R.; Giles, C.; Duque, Juan G.; Urbano, R. R.; Rettori, C.; Thompson, J. D.; Hundley, M. F.; Sarrao, J. L.

doi:10.1063/1.2176109

Cited by 65 publications

(65 citation statements)

References 25 publications

(24 reference statements)

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“…For both materials, the magnetic susceptibility is larger for a field applied along the c axis, in agreement to what was found for the compounds in the In-based R m M n In 3m+2n ͑M = Co, Rh, or Ir, M =1,2͒ series ͑except for R =Gd͒. [24][25][26][27][28] For the whole series, the susceptibility is anisotropic and the ratio ʈ / Ќ taken at T N is mainly determined by the tetragonal crystalline electrical field ͑CEF͒ and reflects to some extent the CEF anisotropy. The ratio remains nearly constant as a function of Cd doping for each family, for example, for M = Rh the values of the ratio are roughly 1.6 and 1.5 for the samples with x = 0.21 and 0.03, respectively.…”

Section: Resultssupporting

confidence: 74%

Cd doping effects in the heavy-fermion compoundsCe2MIn8(M=Rha

et al. 2010

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Low-temperature magnetic properties of Cd-doped Ce 2 MIn 8 ͑M = Rh and Ir͒ single crystals are investigated. Experiments of temperature-dependent magnetic-susceptibility, heat-capacity, and electrical-resistivity measurements revealed that Cd doping enhances the antiferromagnetic ͑AFM͒ ordering temperature from T N = 2.8 K ͑x =0͒ to T N = 4.8 K ͑x = 0.21͒ for Ce 2 RhIn 8−x Cd x and induces long-range AFM ordering with T N = 3.8 K ͑x = 0.21͒ for Ce 2 IrIn 8−x Cd x . Additionally, x-ray and neutron magnetic scattering studies showed that Cd-doped samples present below T N a commensurate antiferromagnetic structure with a propagation vector ជ = ͑ 1 2 , 1 2 ,0͒. The resolved magnetic structures for both compounds indicate that the Cd doping tends to rotate the direction of the ordered magnetic moments toward the ab plane. This result suggests that the Cd doping affects the Ce 3+ ground-state single-ion anisotropy modifying the crystalline electrical field ͑CEF͒ parameters at the Ce 3+ site. Indications of CEF evolution induced by Cd doping were also found in the electrical-resistivity measurements. Comparisons between our results and the general effects of Cd doping on the related compounds CeMIn 5 ͑M = Co, Rh, and Ir͒ confirms the claims that the Cd doping induced electronic tuning is the main effect favoring AFM ordering in these compounds.

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Section: Resultssupporting

confidence: 74%

Cd doping effects in the heavy-fermion compoundsCe2MIn8(M=Rha

et al. 2010

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“…1 using a mean field model including the anisotropic interaction from nearestneighbors as well as the tetragonal CEF hamiltonian 14 for CeAu 0.92 Bi 1.6 . This model was used to simultaneously fit vðTÞ and M(H) data, with T > 20 K as a constrain.…”

Section: Resultsmentioning

confidence: 99%

Magnetic properties of nearly stoichiometric CeAuBi2 heavy fermion compound

Adriano

Rosa

Jesus

et al. 2015

Journal of Applied Physics

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Motivated by the interesting magnetic anisotropy found in the heavy fermion family CeTX 2 (T ¼ transition metal and X ¼ pnictogen), here, we study the novel parent compound CeAu 1Àx Bi 2Ày by combining magnetization, pressure dependent electrical resistivity, and heat-capacity measurements. The magnetic properties of our nearly stoichiometric single crystal sample of CeAu 1Àx Bi 2Ày (x ¼ 0.92 and y ¼ 1.6) revealed an antiferromagnetic ordering at T N ¼ 12 K with an easy axis along the c-direction. The field dependent magnetization data at low temperatures reveal the existence of a spin-flop transition when the field is applied along the c-axis (H c $ 7.5 T and T ¼ 5 K). The heat capacity and pressure dependent resistivity data suggest that CeAu 0.92 Bi 1.6 exhibits a weak heavy fermion behavior with strongly localized Ce 3þ 4f electrons. Furthermore, the systematic analysis using a mean field model including anisotropic nearest-neighbors interactions and the tetragonal crystalline electric field (CEF) Hamiltonian allows us to extract a CEF scheme and two different values for the anisotropic J RKKY exchange parameters between the Ce 3þ ions in this compound. Thus, we discuss a scenario, considering both the anisotropic magnetic interactions and the tetragonal CEF effects, in the CeAu 1Àx Bi 2Ày compounds, and we compare our results with the isostructural compound CeCuBi 2 . V C 2015 AIP Publishing LLC.

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“…Another remarkable result is the breakdown of the De Gennes scaling revealed by non-Kondo members of the REAgBi 2 [14] and RECuBi 2 [15] (RE = rare earth) families. This usually indicates a complex and non-trivial competition between RKKY interactions and tetragonal CEF [16][17][18].…”

Section: Introductionmentioning

confidence: 99%

“…For example, the compound CeCu 0.6 Bi 2 orders antiferromagnetically at T N = 12 K. The magnetic structure determination of CeCuBi 2 revealed a propagation vector (0 0 1 2 ) with the magnetic moments aligned along the c-axis. A systematic analysis of the magnetization and specific heat data within the framework of a mean field theory with influence of anisotropic first-neighbors interaction and tetragonal CEF [17] allowed us to extract the CEF scheme for CeCuBi 2 . It also led us to estimate the values of the anisotropic RKKY exchange parameters between the Ce 3+ ions.…”

Section: Introductionmentioning

confidence: 99%

Physical properties and magnetic structure of the intermetallicCeCuBi2compound

et al. 2014

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In this work, we combine magnetization, pressure dependent electrical resistivity, heat-capacity, 63 Cu Nuclear Magnetic Resonance (NMR) and X-ray resonant magnetic scattering experiments to investigate the physical properties of the intermetallic CeCuBi2 compound. Our single crystals show an antiferromagnetic ordering at TN ≃ 16 K and the magnetic properties indicate that this compound is an Ising antiferromagnet. In particular, the low temperature magnetization data revealed a spin-flop transition at T = 5 K when magnetic fields of about 5.5 T are applied along the c-axis. Moreover, the X-ray magnetic diffraction data below TN revealed a commensurate antiferromagnetic structure with propagation wavevector (0 0 1 2 ) with the Ce 3+ moments oriented along the c-axis. Furthermore, our heat capacity, pressure dependent resistivity, and temperature dependent 63 Cu NMR data suggest that CeCuBi2 exhibits a weak heavy fermion behavior with strongly localized Ce 3+ 4f electrons. We thus discuss a scenario in which both the anisotropic magnetic interactions between the Ce 3+ ions and the tetragonal crystalline electric field effects are taking into account in CeCuBi2.

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Evolution of the magnetic properties and magnetic structures along the RmMIn3m+2 (R=Ce, Nd, Gd, Tb; M=Rh, Ir; and m=1,2) series of intermetallic compounds

Cited by 65 publications

References 25 publications

Cd doping effects in the heavy-fermion compoundsCe2MIn8(M=Rha

Cd doping effects in the heavy-fermion compoundsCe2MIn8(M=Rha

Magnetic properties of nearly stoichiometric CeAuBi2 heavy fermion compound

Physical properties and magnetic structure of the intermetallicCeCuBi2compound

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