Annealing effect in raman scattering of various types of tourmalines

Luc Huy Hoang; Nguyen Thi Minh Hien; Xiang Bai Chen; In Sang Yang

doi:10.1007/s10812-013-9689-4

Annealing effect in raman scattering of various types of tourmalines

Luc Huy Hoang, Nguyen Thi Minh Hien, Xiang Bai Chen, In Sang Yang

Department of Physics

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

3 Scopus citations

Abstract

Raman scattering studies of the annealing effect in spectra of seven natural tourmalines are presented. It was found that tourmalines containing Fe ions when annealed in air showed Raman features significantly different from those of the Fe-free minerals. Furthermore, tourmalines containing the Fe ions behaved differently depending on whether they were annealed in air or in argon. Our analysis indicated that these differences were mainly due to the Fe²⁺ ions present in the tourmalines. When Fe²⁺-tourmalines were annealed in air, the Fe²⁺ ions were oxidized into Fe³⁺ ions, and the oxidation strongly modified the crystal structure, even in tourmalines with a very low Fe²⁺ concentration (0.20 wt.%). Our finding may be helpful in studying the oxidation of other minerals which contain the Fe²⁺ ions.

Original language	English
Pages (from-to)	881-887
Number of pages	7
Journal	Journal of Applied Spectroscopy
Volume	79
Issue number	6
DOIs	https://doi.org/10.1007/s10812-013-9689-4
State	Published - Jan 2013

Bibliographical note

Funding Information:
Acknowledgements. The authors would like to thank the Vietnam National Foundation for Science and Technology Development (NAFOSTED), grant 103.02.2010.04 for financial support. X. B. C. acknowledges the support by Konkuk University of 2012. N.T.M.H. and I.S.Y. are grateful for support from the 2011àpost-doctoral fellowship of Ewha Womans University.

Keywords

Raman scattering
annealing
oxidation
tourmaline

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title = "Annealing effect in raman scattering of various types of tourmalines",

abstract = "Raman scattering studies of the annealing effect in spectra of seven natural tourmalines are presented. It was found that tourmalines containing Fe ions when annealed in air showed Raman features significantly different from those of the Fe-free minerals. Furthermore, tourmalines containing the Fe ions behaved differently depending on whether they were annealed in air or in argon. Our analysis indicated that these differences were mainly due to the Fe2+ ions present in the tourmalines. When Fe2+-tourmalines were annealed in air, the Fe2+ ions were oxidized into Fe3+ ions, and the oxidation strongly modified the crystal structure, even in tourmalines with a very low Fe2+ concentration (0.20 wt.%). Our finding may be helpful in studying the oxidation of other minerals which contain the Fe2+ ions.",

keywords = "Raman scattering, annealing, oxidation, tourmaline",

author = "Hoang, {Luc Huy} and Hien, {Nguyen Thi Minh} and Chen, {Xiang Bai} and Yang, {In Sang}",

note = "Funding Information: Acknowledgements. The authors would like to thank the Vietnam National Foundation for Science and Technology Development (NAFOSTED), grant 103.02.2010.04 for financial support. X. B. C. acknowledges the support by Konkuk University of 2012. N.T.M.H. and I.S.Y. are grateful for support from the 2011{\`a}post-doctoral fellowship of Ewha Womans University.",

year = "2013",

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doi = "10.1007/s10812-013-9689-4",

language = "English",

volume = "79",

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T1 - Annealing effect in raman scattering of various types of tourmalines

AU - Hoang, Luc Huy

AU - Hien, Nguyen Thi Minh

AU - Chen, Xiang Bai

AU - Yang, In Sang

N1 - Funding Information: Acknowledgements. The authors would like to thank the Vietnam National Foundation for Science and Technology Development (NAFOSTED), grant 103.02.2010.04 for financial support. X. B. C. acknowledges the support by Konkuk University of 2012. N.T.M.H. and I.S.Y. are grateful for support from the 2011àpost-doctoral fellowship of Ewha Womans University.

PY - 2013/1

Y1 - 2013/1

N2 - Raman scattering studies of the annealing effect in spectra of seven natural tourmalines are presented. It was found that tourmalines containing Fe ions when annealed in air showed Raman features significantly different from those of the Fe-free minerals. Furthermore, tourmalines containing the Fe ions behaved differently depending on whether they were annealed in air or in argon. Our analysis indicated that these differences were mainly due to the Fe2+ ions present in the tourmalines. When Fe2+-tourmalines were annealed in air, the Fe2+ ions were oxidized into Fe3+ ions, and the oxidation strongly modified the crystal structure, even in tourmalines with a very low Fe2+ concentration (0.20 wt.%). Our finding may be helpful in studying the oxidation of other minerals which contain the Fe2+ ions.

AB - Raman scattering studies of the annealing effect in spectra of seven natural tourmalines are presented. It was found that tourmalines containing Fe ions when annealed in air showed Raman features significantly different from those of the Fe-free minerals. Furthermore, tourmalines containing the Fe ions behaved differently depending on whether they were annealed in air or in argon. Our analysis indicated that these differences were mainly due to the Fe2+ ions present in the tourmalines. When Fe2+-tourmalines were annealed in air, the Fe2+ ions were oxidized into Fe3+ ions, and the oxidation strongly modified the crystal structure, even in tourmalines with a very low Fe2+ concentration (0.20 wt.%). Our finding may be helpful in studying the oxidation of other minerals which contain the Fe2+ ions.

KW - Raman scattering

KW - annealing

KW - oxidation

KW - tourmaline

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JO - Journal of Applied Spectroscopy

JF - Journal of Applied Spectroscopy

IS - 6

ER -

Annealing effect in raman scattering of various types of tourmalines

Abstract

Bibliographical note

Keywords

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