Effect of nonstoichiometry on the transition from ferromagnetism to antiferromagnetism in the ternary indides<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Ce</mml:mi></mml:mrow><mml:mrow><mml:mn>1.95</mml:mn></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mi mathvariant="normal">Pd</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn><mml:mo>+</mml:mo><mml:mn>2</mml:mn><mml:mi>x</mml:mi></mml:mrow></mml:msu

Giovannini, M.; Michor, H.; Bauer, E.; Hilscher, G.; Rogl, P.; Bonelli, T; Fauth, François; Fischer, Peter; Herrmannsdörfer, T; Keller, L.; Sikora, W.; Saccone, A.; Ferro, R.

doi:10.1103/physrevb.61.4044

Cited by 46 publications

(56 citation statements)

References 15 publications

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“…There is, however, a slight decrease of the 'a' lattice parameter accompanied by an increase of the 'c' parameter, which produces an increase of the 'c/a' ratio. Such a variation is explained by the fact that the excess of P d replacing larger In atoms occupies two 4e sites which lie on the 'c' axis symmetrically placed respect to the original In − 2a site [13]. As a consequence the Ce-Ce inter-planes distance is expected to increase with P d content.…”

Section: Experimental Details and Resultsmentioning

confidence: 99%

“…Such a gap splits the range of solubility into two 'branches' which show distinct magnetic structures, being the Ce-rich branch FM and the Pd-rich one AF [13]. The studied alloys can be described by the general formula Ce 2−x Pd 2+y In 1−z , with: −0.1 ≤ x ≤ 0.1, y = x + z and 0.05 ≤ z ≤ 0.3, with the richest P d composition placed at the edge of the chemical stability.…”

Section: Experimental Details and Resultsmentioning

confidence: 99%

“…The Ce 2 Pd 2 In system presents a wide range of solid solution [13], with a gap of solubility around the stoichiometric composition. Such a gap splits the range of solubility into two 'branches' which show distinct magnetic structures, being the Ce-rich branch FM and the Pd-rich one AF [13].…”

Section: Experimental Details and Resultsmentioning

confidence: 99%

“…Such a temperature is traced as the maximum curvature of C m (T )/T . This weak change in the thermal dependence of C m /T indicates that around that temperature the modulated phase [13] continuously transforms into the FM GS.…”

Section: Thermal Propertiesmentioning

confidence: 99%

“…In this family of compounds, the significant range of solubility of the 2-2-1 ternary indides [13] provides the possibility to investigate the effect of the electronic concentration. Particularly, within the region where In sites can be occupied by P d atoms, the number of 'holes' in the conduction band is expected to increase driven by P d concentration.…”

Section: Introductionmentioning

confidence: 99%

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Electron concentration effects on the Shastry-Sutherland phase stability in Ce2−xPd2+yIn<

et al. 2011

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The stability of a Shastry-Sutherland ShSu phase as a function of electron concentration is investigated through the field dependence of thermal and magnetic properties of the solid solution Ce2−xPd2+yIn1−z in the antiferromagnetic branch. In these alloys the electronic (holes) variation is realized by increasing P d concentration. The AF transition TM decreases from 3.5 K to 2.8 K as P d concentration increases from y = 0.2 to y = 0.4. By applying magnetic field, the ShSu phase is suppressed once the field induced ferromagnetic polarization takes over at a critical field Bcr which increases with P d content. A detailed analysis around the critical point reveals a structure in the maximum of the ∂M/∂B derivative, which is related with incipient steps in the magnetization M (B) as predicted by the theory for the ShSu lattice. The crossing of M (B) isotherms, observed in ShSu prototype compounds, is also analyzed. The effect of In substitution by P d is interpreted as an increase of the number of 'holes' in the conduction band and results in a unique parameter able to describe the variation of the magnetic properties along the studied range of concentration.

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Section: Experimental Details and Resultsmentioning

confidence: 99%

Section: Experimental Details and Resultsmentioning

confidence: 99%

Section: Experimental Details and Resultsmentioning

confidence: 99%

Section: Thermal Propertiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electron concentration effects on the Shastry-Sutherland phase stability in Ce2−xPd2+yIn<

et al. 2011

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Appearance of long range magnetic order in a nonmagnetic periphery: Yb₂Pd₂(In,Sn)

Bauer

Khan

Giovannini

et al. 2010

Physica Status Solidi (b)

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Neutron diffraction measurements as well as temperature, field and pressure dependent resistivity studies demonstrate the occurence of a dome-like magnetic phase in Yb 2 Pd 2 ðIn 1Àx Sn x Þ (0:59x90:9)withantiferromagneticordering(k ¼ ð0; 0; 1=2Þ), whereas both Yb 2 Pd 2 In and Yb 2 Pd 2 Sn are nonmagnetic.The ordered moment and the ordering temperature of this phase is a result of a U-shape-like concentration dependence of the Kondo temperarature when proceeding from Yb 2 Pd 2 In to Yb 2 Pd 2 Sn.

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Entropy Bottlenecks at T $$\,\rightarrow \,$$ → 0 in Ce-Lattice and Related Compounds

Sereni

2014

J Low Temp Phys

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A number of specific heat C m anomalies are reported in Ce-and Yb-lattice compounds around 1 K which cannot be associated to usual phase transitions despite of their robust magnetic moments. Instead of a C m (T ) jump, these anomalies show coincident morphology: (i) a significant tail in C m /T , with similar power law decay above their maxima (T > T m ), (ii) whereas a C m (T 2 ) dependence is observed below T m . (iii) The comparison of their respective entropy gain S m (T ) indicates that ≈ 0.7Rln2 is condensed within the T > T m tail, in coincidence with an exemplary spin-ice compound. Such amount of entropy arises from a significant increase of the density of low energy excitations, reflected in a divergent C m (T > T m )/T dependence. (iv) Many of their lattice structures present conditions for magnetic frustration. The origin of these anomalies can be attributed to an interplay between the divergent density of magnetic excitations at T → 0 and the limited amount of degrees of freedom: S m = Rln2 for a doublet-ground state. Due to this "entropy bottleneck," the paramagnetic minimum of energy blurs out and the system slides into an alternative minimum through a continuous transition. A relevant observation in these very heavy fermion systems is the possible existence of an upper limit for C m /T LimT →0 ≈ 7 J/mol K 2 observed in four Yb-and Pr-based compounds.

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Effect of nonstoichiometry on the transition from ferromagnetism to antiferromagnetism in the ternary indidesCe1.95Pd2+2x

Cited by 46 publications

References 15 publications

Electron concentration effects on the Shastry-Sutherland phase stability in Ce2−xPd2+yIn<

Electron concentration effects on the Shastry-Sutherland phase stability in Ce2−xPd2+yIn<

Appearance of long range magnetic order in a nonmagnetic periphery: Yb₂Pd₂(In,Sn)

Entropy Bottlenecks at T $$\,\rightarrow \,$$ → 0 in Ce-Lattice and Related Compounds

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Effect of nonstoichiometry on the transition from ferromagnetism to antiferromagnetism in the ternary indidesCe1.95Pd2+2x

Cited by 46 publications

References 15 publications

Electron concentration effects on the Shastry-Sutherland phase stability in Ce2−xPd2+yIn<

Electron concentration effects on the Shastry-Sutherland phase stability in Ce2−xPd2+yIn<

Appearance of long range magnetic order in a nonmagnetic periphery: Yb2Pd2(In,Sn)

Entropy Bottlenecks at T $$\,\rightarrow \,$$ → 0 in Ce-Lattice and Related Compounds

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Appearance of long range magnetic order in a nonmagnetic periphery: Yb₂Pd₂(In,Sn)