Far-infrared spectra of ammonium layer and framework silicates

Mainak Mookherjee; Simon A.T. Redfern; Ming Zhang

doi:10.1127/0028-3649/2004/2004-0001

Far-infrared spectra of ammonium layer and framework silicates

Mainak Mookherjee^*, Simon A.T. Redfern, Ming Zhang

^*Corresponding author for this work

University of Cambridge

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The low-temperature behaviour of the ammonium mica: synthetic ND₄-tobelite and ND₄-phlogopite has been studied by infrared spectroscopy in the far infrared region, from room temperature down to 20 K. Unlike previously studied low-temperature, orientational ordering of the ammonium ion in the interlayer region from the near infrared region (MOOKHERJEE et al. 2002 a, b), the bands in far infrared region do not show significant change on cooling. This indicates that the coupling between ordering of ammonium ions and other structural rearrangements is weak.

Original language	English
Pages (from-to)	1-9
Number of pages	9
Journal	Neues Jahrbuch fur Mineralogie, Monatshefte
Issue number	1
DOIs	https://doi.org/10.1127/0028-3649/2004/2004-0001
Publication status	Published - Jan 2004
Externally published	Yes

ASJC Scopus Subject Areas

Geochemistry and Petrology

Keywords

Ammonium
Far-infrared spectroscopy
Low-temperature
Mica

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10.1127/0028-3649/2004/2004-0001

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title = "Far-infrared spectra of ammonium layer and framework silicates",

abstract = "The low-temperature behaviour of the ammonium mica: synthetic ND4-tobelite and ND4-phlogopite has been studied by infrared spectroscopy in the far infrared region, from room temperature down to 20 K. Unlike previously studied low-temperature, orientational ordering of the ammonium ion in the interlayer region from the near infrared region (MOOKHERJEE et al. 2002 a, b), the bands in far infrared region do not show significant change on cooling. This indicates that the coupling between ordering of ammonium ions and other structural rearrangements is weak.",

keywords = "Ammonium, Far-infrared spectroscopy, Low-temperature, Mica",

author = "Mainak Mookherjee and Redfern, {Simon A.T.} and Ming Zhang",

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AU - Mookherjee, Mainak

AU - Redfern, Simon A.T.

AU - Zhang, Ming

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N2 - The low-temperature behaviour of the ammonium mica: synthetic ND4-tobelite and ND4-phlogopite has been studied by infrared spectroscopy in the far infrared region, from room temperature down to 20 K. Unlike previously studied low-temperature, orientational ordering of the ammonium ion in the interlayer region from the near infrared region (MOOKHERJEE et al. 2002 a, b), the bands in far infrared region do not show significant change on cooling. This indicates that the coupling between ordering of ammonium ions and other structural rearrangements is weak.

AB - The low-temperature behaviour of the ammonium mica: synthetic ND4-tobelite and ND4-phlogopite has been studied by infrared spectroscopy in the far infrared region, from room temperature down to 20 K. Unlike previously studied low-temperature, orientational ordering of the ammonium ion in the interlayer region from the near infrared region (MOOKHERJEE et al. 2002 a, b), the bands in far infrared region do not show significant change on cooling. This indicates that the coupling between ordering of ammonium ions and other structural rearrangements is weak.

KW - Ammonium

KW - Far-infrared spectroscopy

KW - Low-temperature

KW - Mica

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Far-infrared spectra of ammonium layer and framework silicates

Abstract

ASJC Scopus Subject Areas

Keywords

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