Matches in SemOpenAlex for { <https://semopenalex.org/work/W4310062456> ?p ?o ?g. }
- W4310062456 endingPage "116077" @default.
- W4310062456 startingPage "116077" @default.
- W4310062456 abstract "PbF2 has already been the subject of one of Michael Faraday's experiments that played the crucial part in the discovery of fast F− anion transport in solids. In contrast to the cubic form of PbF2, ion dynamics in orthorhombic modification, that is, α-PbF2, is rather poor at ambient conditions. Its complex crystal structure hosts two magnetically inequivalent F sites (F1 and F2), which makes it, however, a rather interesting model substance to study fundamental aspects of ion transport. Here, to contribute to a general understanding of ion dynamics in compounds crystallizing with PbCl2 (cotunnite) structure, we studied the influence of structural disorder on ion dynamics in nominally pure α-PbF2. We expect that this approach will help us to understand also the hopping mechanisms in ordered PbF2. Broadband conductivity spectroscopy and electric modulus spectroscopy showed that disorder causes the F− anion conductivity of α-PbF2 to increase by a factor of 100. In excellent agreement with this result, atomic-scale 19F high-resolution NMR spectroscopy reveals a clear increase in F1-F2 exchange shedding, at the same time, light on a controversial discussion how to interpret the 19F MAS NMR spectra of α-PbF2 in detail. In addition, a quantitative analysis of long-range ion transport is provided by broadband conductivity measurements. We show that F− anion dynamics in nanocrystalline PbF2 has to be described by an activation energy of 0.48 eV, which is significantly lower than that found for the mechanically untreated sample (0.6 eV at T > 300 K). This change in ion dynamics is reflected also by time-domain 19F NMR spectroscopy pointing to local activation barriers with values ranging from 0.17 eV to 0.31 eV in nanocrystalline α-PbF2. NMR line shape measurements indicate that the F1 site, in particular, plays an important role in overall anion exchange in the nanostructured form." @default.
- W4310062456 created "2022-11-30" @default.
- W4310062456 creator A5030186570 @default.
- W4310062456 creator A5034391825 @default.
- W4310062456 creator A5041868142 @default.
- W4310062456 creator A5085418285 @default.
- W4310062456 date "2022-12-01" @default.
- W4310062456 modified "2023-09-26" @default.
- W4310062456 title "Fluoride ion dynamics in nanocrystalline α-PbF2: On the tremendous impact of structural disorder on F− anion hopping in poor ion conductors" @default.
- W4310062456 cites W1556177135 @default.
- W4310062456 cites W1560927384 @default.
- W4310062456 cites W1652171678 @default.
- W4310062456 cites W186219194 @default.
- W4310062456 cites W1971816371 @default.
- W4310062456 cites W1977590334 @default.
- W4310062456 cites W1978080688 @default.
- W4310062456 cites W1979533040 @default.
- W4310062456 cites W1989108013 @default.
- W4310062456 cites W1993103338 @default.
- W4310062456 cites W1993882471 @default.
- W4310062456 cites W1996135148 @default.
- W4310062456 cites W1998783321 @default.
- W4310062456 cites W2003139560 @default.
- W4310062456 cites W2007699679 @default.
- W4310062456 cites W2012284610 @default.
- W4310062456 cites W2014202794 @default.
- W4310062456 cites W2016824514 @default.
- W4310062456 cites W2020369785 @default.
- W4310062456 cites W2027414535 @default.
- W4310062456 cites W2045674746 @default.
- W4310062456 cites W2053146827 @default.
- W4310062456 cites W2062162266 @default.
- W4310062456 cites W2071807730 @default.
- W4310062456 cites W2075556604 @default.
- W4310062456 cites W2090198665 @default.
- W4310062456 cites W2092765772 @default.
- W4310062456 cites W2095010035 @default.
- W4310062456 cites W2108243355 @default.
- W4310062456 cites W2108248445 @default.
- W4310062456 cites W2160297238 @default.
- W4310062456 cites W2293427450 @default.
- W4310062456 cites W2299118419 @default.
- W4310062456 cites W2301876101 @default.
- W4310062456 cites W2323844811 @default.
- W4310062456 cites W2335008892 @default.
- W4310062456 cites W2345192197 @default.
- W4310062456 cites W2522280922 @default.
- W4310062456 cites W2558747701 @default.
- W4310062456 cites W2593720910 @default.
- W4310062456 cites W2603309874 @default.
- W4310062456 cites W2626987879 @default.
- W4310062456 cites W2724522582 @default.
- W4310062456 cites W2745160248 @default.
- W4310062456 cites W2755771741 @default.
- W4310062456 cites W2807048900 @default.
- W4310062456 cites W2808260231 @default.
- W4310062456 cites W2909784015 @default.
- W4310062456 cites W2913187047 @default.
- W4310062456 cites W2925222827 @default.
- W4310062456 cites W2932463710 @default.
- W4310062456 cites W2952828977 @default.
- W4310062456 cites W2997547499 @default.
- W4310062456 cites W3027122611 @default.
- W4310062456 cites W3033434061 @default.
- W4310062456 cites W3047542339 @default.
- W4310062456 cites W3119095098 @default.
- W4310062456 cites W3123358238 @default.
- W4310062456 cites W3167064793 @default.
- W4310062456 cites W3191106184 @default.
- W4310062456 cites W4210781073 @default.
- W4310062456 cites W4220856958 @default.
- W4310062456 cites W4230231768 @default.
- W4310062456 cites W4234429814 @default.
- W4310062456 cites W4376848406 @default.
- W4310062456 doi "https://doi.org/10.1016/j.ssi.2022.116077" @default.
- W4310062456 hasPublicationYear "2022" @default.
- W4310062456 type Work @default.
- W4310062456 citedByCount "0" @default.
- W4310062456 crossrefType "journal-article" @default.
- W4310062456 hasAuthorship W4310062456A5030186570 @default.
- W4310062456 hasAuthorship W4310062456A5034391825 @default.
- W4310062456 hasAuthorship W4310062456A5041868142 @default.
- W4310062456 hasAuthorship W4310062456A5085418285 @default.
- W4310062456 hasBestOaLocation W43100624561 @default.
- W4310062456 hasConcept C121332964 @default.
- W4310062456 hasConcept C131540310 @default.
- W4310062456 hasConcept C140676511 @default.
- W4310062456 hasConcept C145148216 @default.
- W4310062456 hasConcept C147597530 @default.
- W4310062456 hasConcept C147789679 @default.
- W4310062456 hasConcept C159467904 @default.
- W4310062456 hasConcept C178790620 @default.
- W4310062456 hasConcept C185592680 @default.
- W4310062456 hasConcept C192562407 @default.
- W4310062456 hasConcept C32891209 @default.
- W4310062456 hasConcept C59593255 @default.
- W4310062456 hasConcept C62520636 @default.
- W4310062456 hasConcept C8010536 @default.