The phase diagram of the Ce–Pt system

Janghorban, Amin; Lomello-Tafin, Marc; Moreau, Jean-Michel; Galez, Ph.

doi:10.1016/j.intermet.2010.07.012

Cited by 15 publications

(9 citation statements)

References 36 publications

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“…While this finding actually matches a known homogeneity domain in the bulk phase diagram 28,29,43 , it is strongly at variance with the large body of evidence for CePt 5 formation at the Pt(111) surface 20,25,27 . Nevertheless, Baddeley et al…”

Section: Resultssupporting

confidence: 79%

“…23 to CePt 3 , depending on initial Ce coverage. While this finding actually matches a known homogeneity domain in the bulk phase diagram 28,29,43 , it is strongly at variance with the large body of evidence for CePt 5 formation at the Pt(111) surface 20,25,27 . Nevertheless, Baddeley et al 20 report their photoemission results to be in line with those of Ref.…”

Section: A Structure and Compositionsupporting

confidence: 79%

“…The bulk binary Ce-Pt phase diagram 28,29 exhibits various stable intermetallic phases with ground states ranging from a ferromagnetic Kondo lattice with signs of quantum criticality in CePt 30 to low temperature antiferromagnetism with unscreened Ce moments in CePt 5 according to Ref. 31.…”

Section: Introductionmentioning

confidence: 99%

“…Among these, Ce-Pt surface phases on Pt(111) have been repeatedly investigated since the inital report by Tang et al 18 , not only in the attempt to explore correlation physics but also out of interest in their catalytic properties [19][20][21][22][23][24][25][26][27] . The bulk binary Ce-Pt phase diagram 28,29 exhibits various stable intermetallic phases with ground states ranging from a ferromagnetic Kondo lattice with signs of quantum criticality in CePt 30 to low temperature antiferromagnetism with unscreened Ce moments in CePt 5 according to Ref. 31.…”

Section: Introductionmentioning

confidence: 99%

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Electronic tuneability of a structurally rigid surface intermetallic and Kondo lattice:CePt5/Pt(111)

et al. 2015

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We present an extensive study of structure, composition, electronic and magnetic properties of Ce-Pt surface intermetallic phases on Pt(111) as a function of their thickness. The sequence of structural phases appearing in low energy electron diffraction (LEED) may invariably be attributed to a single underlying intermetallic atomic lattice. Findings from both microscopic and spectroscopic methods, respectively, prove compatible with CePt5 formation when their characteristic probing depth is adequately taken into account. The intermetallic film thickness serves as an effective tuning parameter which brings about characteristic variations of the Cerium valence and related properties. Soft x-ray absorption (XAS) and magnetic circular dichroism (XMCD) prove well suited to trace the changing Ce valence and to assess relevant aspects of Kondo physics in the CePt5 surface intermetallic. We find characteristic Kondo scales of the order of 10 2 K and evidence for considerable magnetic Kondo screening of the local Ce 4f moments. CePt5/Pt(111) and related systems therefore appear to be promising candidates for further studies of low-dimensional Kondo lattices at surfaces.

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Section: Resultssupporting

confidence: 79%

Section: A Structure and Compositionsupporting

confidence: 79%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Electronic tuneability of a structurally rigid surface intermetallic and Kondo lattice:CePt5/Pt(111)

et al. 2015

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“…Some researchers have prepared a Pt-Ce catalyst not used for fuel cell applications by arc melting technique on a water-cooled copper hearth under an argon atmosphere, which is a long procedure [21,22]. A better mixture of platinum and cerium in the final catalyst could be achieved by using a chelating agent for the cerium source.…”

Section: Introductionmentioning

confidence: 99%

Vulcan/Pt/Ce Catalysts Prepared by Impregnation Using EDTA for Direct Methanol Fuel Cell, Direct Ethanol Fuel Cell, and Polymer Electrolyte Membrane Fuel Cell

Guzmán-Blas¹,

Menéndez²,

Vélez³

et al. 2013

SGRE

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A wet chemistry synthesis of Pt-Ce doped catalysts on carbon Vulcan support using an impregnation method with EDTA is presented. The composite catalyst was characterized by XRD, XPS and TEM. The catalytic activity of the prepared material was tested in a direct fuel cell using methanol, ethanol and hydrogen as fuels. The polarization and power curves showed that the Vulcan/Pt/Ce(III) doped catalysts improved the performance of the fuel cells when compared with Vulcan-Pt anode materials.

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Thermal Methods

Johnson

White

2013

Multi Length‐Scale Characterisation

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The phase diagram of the Ce–Pt system

Cited by 15 publications

References 36 publications

Electronic tuneability of a structurally rigid surface intermetallic and Kondo lattice:CePt5/Pt(111)

Electronic tuneability of a structurally rigid surface intermetallic and Kondo lattice:CePt5/Pt(111)

Vulcan/Pt/Ce Catalysts Prepared by Impregnation Using EDTA for Direct Methanol Fuel Cell, Direct Ethanol Fuel Cell, and Polymer Electrolyte Membrane Fuel Cell

Thermal Methods

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