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Authordc.contributor.authorFuentealba Castro, Pablo 
Authordc.contributor.authorOlea Azar, Claudio
Authordc.contributor.authorAguilar Bolados, H. 
Authordc.contributor.authorAudebrand, N. 
Authordc.contributor.authorSantana, R. C. de 
Authordc.contributor.authorDoerenkamp, C. 
Authordc.contributor.authorEckert, H. 
Authordc.contributor.authorMagon, C. J. 
Authordc.contributor.authorSpodine Spiridonova, Evgenia 
Cita de ítemdc.identifier.citationPhys. Chem. Chem. Phys., 2020, 22, 8315-8324es_ES
Abstractdc.description.abstractFour bimetallic phases of the thiophosphate family have been synthesized by the cationic exchange reaction using a freshly prepared K0.5Cd0.75PS3 precursor phase and methanolic solutions of nitrates of the divalent cations Zn-II, NiII, Co-II, and Mn-II. All the materials were characterized by FTIR, PXRD, SEMEDXS and (in the case of the diamagnetic compounds) by solid state NMR. For the K0.5Cd0.75PS3 precursor, the X-ray powder diffraction data suggest a modification of the structure, while solid state NMR results confirm that this phase possesses an ordered arrangement of Cd vacancies. The cationic exchange reaction achieves a complete removal of potassium ions (no potassium detected by SEMEDXS) and re-occupation of the vacancies by divalent cations. Therefore, the obtained compounds have an average composition of M0.25Cd0.75PS3 (M = Zn-II, NiII, Co-II, Mn-II) and possess an ordered distribution of the substituent cations. Even with the paramagnetic substitution level of 25%, antiferromagnetic behaviour is present in the phases with Mn-II, Co-II and Ni-II, as evidenced by dc susceptibility and in the case of the Mn-II substituted phase by EPR. The cooperative magnetic interactions confirm the conclusion that the paramagnetic ions adopt an ordered arrangement. The analysis by broad band impedance spectroscopy allows to attribute the conductivity in these materials to charge movements in the layers due to the difference in electronegativity of the metal ions. Zn0.25Cd0.75PS3 is the phase that shows the highest conductivity values. Finally, the band gap energies of the bimetallic phases tend to be lower than those of the single-metal phases, probably due to an overlap of the band structures.es_ES
Patrocinadordc.description.sponsorshipComision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) CONICYT FONDECYT 3170186 LIA-M3 project (France/Chile) 1207 Comision Nacional de Investigacion Cientifica y Tecnologica (CONICYT) FONDEQUIP/PPMS/EQM 130086 Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) 2013/07793-6 2017/06649-0 National Council for Scientific and Technological Development (CNPq) 427164/2018-4 FAPEG 201410267001782es_ES
Publisherdc.publisherRoyal Society of Chemistryes_ES
Type of licensedc.rightsAttribution-NonCommercial-NoDerivs 3.0 Chile*
Link to Licensedc.rights.uri*
Sourcedc.sourcePhysical Chemistry Chemical Physicses_ES
Keywordsdc.subjectIntercalated MNPS3es_ES
Keywordsdc.subjectHydrogen storagees_ES
Títulodc.titlePhysical properties of new ordered bimetallic phases M0.25Cd0.75PS3 (M = Zn-II, Ni-II, Co-II, Mn-II)es_ES
Document typedc.typeArtículo de revistaes_ES
dcterms.accessRightsdcterms.accessRightsAcceso Abierto
Indexationuchile.indexArtículo de publicación ISIes_ES

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