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Murad, Enver, Schwertmann, Udo (1984) The influence of crystallinity on the Mössbauer spectrum of lepidocrocite. Mineralogical Magazine, 48 (349) 507-511 doi:10.1180/minmag.1984.048.349.04

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Reference TypeJournal (article/letter/editorial)
TitleThe influence of crystallinity on the Mössbauer spectrum of lepidocrocite
JournalMineralogical MagazineISSN0026-461X
AuthorsMurad, EnverAuthor
Schwertmann, UdoAuthor
Year1984 (December)Volume48
Issue349
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_48/48-349-507.pdf+
DOIdoi:10.1180/minmag.1984.048.349.04Search in ResearchGate
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Mindat Ref. ID3664Long-form Identifiermindat:1:5:3664:5
GUID0
Full ReferenceMurad, Enver, Schwertmann, Udo (1984) The influence of crystallinity on the Mössbauer spectrum of lepidocrocite. Mineralogical Magazine, 48 (349) 507-511 doi:10.1180/minmag.1984.048.349.04
Plain TextMurad, Enver, Schwertmann, Udo (1984) The influence of crystallinity on the Mössbauer spectrum of lepidocrocite. Mineralogical Magazine, 48 (349) 507-511 doi:10.1180/minmag.1984.048.349.04
In(1984, December) Mineralogical Magazine Vol. 48 (349) Mineralogical Society
Abstract/NotesAbstractParticle morphology can result in very pronounced effects of crystallinity on the Mössbauer spectra of lepidocrocite. Such effects can noticeably increase the quadrupole splitting of poorly crystallized paramagnetic lepidocrocites, making it necessary to fit two doublets of different quadrupole splittings to Mössbauer spectra of such samples, and may lower the onset of magnetic ordering from the bulk Néel temperature of 77 ±1 K to about 50 K.At 4.2 K, distributions of magnetic hyperfine fields with a limiting upper field of 460 kOe are observed. The contributions of lower fields to such distributions increase with decreasing crystallinity, producing asymmetrically broadened resonant lines.

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Lepidocrocite

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Murad, Enver (1979) Mössbauer spectra of goethite: evidence for structural imperfections. Mineralogical Magazine, 43 (327) 355-361 doi:10.1180/minmag.1979.043.327.07
Murad, Enver (2002) Udo Schwertmann. Clay Minerals, 37 (4) 573-574 doi:10.1180/0009855023740059
Murad, Enver, Schwertmann, Udo (1980) The Mössbauer spectrum of ferrihydrite and its relations to those of other iron oxides. American Mineralogist, 65 (9-10) 1044-1049
Murad, E., Schwertmann, U. (1983) The influence of aluminium substitution and crystallinity on the Mössbauer spectra of goethite. Clay Minerals, 18 (3) 301-312 doi:10.1180/claymin.1983.018.3.07
Murad, Enver (2016) UDO Schwertmann (25 November 1927–20 January 2016) Clay Minerals, 51 (1) 123-124 doi:10.1180/claymin.2016.051.1.08
(1984) Alphabetical Index. Mineralogical Magazine, 48 (349) 591-595 doi:10.1180/minmag.1984.048.349.30
Murad, Enver (1982) Iron oxide mineralogy of a hydrothermal assemblage on Santorini Island, Aegean Sea. Mineralogical Magazine, 46 (338) 89-93 doi:10.1180/minmag.1982.046.338.14
Murad, Enver (1976) Zoned, birefringent garnets from Thera Island, Santorini Group (Aegean Sea) Mineralogical Magazine, 40 (315) 715-719 doi:10.1180/minmag.1976.040.315.05
Effenberger, Herta, Zemann, Josef (1984) The crystal structure of caratiite. Mineralogical Magazine, 48 (349) 541-546 doi:10.1180/minmag.1984.048.349.10
Nawaz, Rab (1984) New data on cowlesite from Northern Ireland. Mineralogical Magazine, 48 (349) 565-566 doi:10.1180/minmag.1984.048.349.19
Nawaz, Rab (1984) Killinite is a di-octahedral hydromuscovite. Mineralogical Magazine, 48 (349) 566-567 doi:10.1180/minmag.1984.048.349.20
 
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