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Temperature and nic...
Temperature and nickel substitution effects on the phase transitions in the Sr2Zn1-xNixWO6 ( 0 <= x <= 1) double perovskite
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- Manoun, Bouchaib (författare)
- Univ Hassan 1er, LS3M, Khouribga 25000, Morocco.
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- Mirinioui, F. (författare)
- Univ Hassan 1er, LS3M, Khouribga 25000, Morocco.
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- Tamraoui, Y. (författare)
- Univ Hassan 1er, LS3M, Khouribga 25000, Morocco.
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- Solhy, A. (författare)
- Mohammed VI Polytech Univ, CAM, Lot 660 Hay Moulay Rachid, Ben Guerir 43150, Morocco.
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- Yang, Wenge (författare)
- HPSTAR, Shanghai 201203, Peoples R China.;Carnegie Inst Sci, Geophys Lab, HPSynC, Argonne, IL 60439 USA.
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- Lazor, Peter (författare)
- Uppsala universitet,Mineralogi, petrologi och tektonik
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Univ Hassan 1er, LS3M, Khouribga 25000, Morocco Mohammed VI Polytech Univ, CAM, Lot 660 Hay Moulay Rachid, Ben Guerir 43150, Morocco. (creator_code:org_t)
- Elsevier BV, 2016
- 2016
- Engelska.
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Ingår i: Journal of Alloys and Compounds. - : Elsevier BV. - 0925-8388 .- 1873-4669. ; 689, s. 233-245
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Sr2Zn1-xNixWO6 solid solutions (with 0 <= x <= 1) have been synthesized by solid-state reactions, and characterized by X-Ray diffraction and Raman spectroscopy. The X-Ray powder diffraction (XRD) data at room temperature shows a systematical change of structure vs. nickel content: the compound adopts a monoclinic phase with a P2(1)/n space group with 0 <= x <= 0.18, a tetragonal structure with a I4/m space group with x = 0.25, and a tetragonal structure with a I4/mmm space group with 0.5 <= x <= 1. Further in-situ Raman study at elevated temperature (up to 555 degrees C) shows the pristine monoclinic phase (0 <= x <= 0.18) follows the phase path: monoclinic (P2(1)/n) -> tetragonal (I4/m) -> tetragonal (I4/ mmm) -> cubic (Fm (3) over barm); for the compound Sr2Zn0.75Ni0.25WO6, it involves later two phase transitions as tetragonal (I4/m) -> tetragonal (I4/mmm) -> cubic (Fm (3) over barm); and for the 0.5 <= x <= 1 compounds, only one phase transition I4/mmm to Fm (3) over barm was observed. The combined investigation of composition and temperature provides us a complete understanding of chemical substitution and temperature effect on structural phase transition.
Ämnesord
- NATURVETENSKAP -- Kemi -- Materialkemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Materials Chemistry (hsv//eng)
Nyckelord
- Sr2Zn1-xNixWO6 double perovskite
- Crystal structure
- Phase transitions
- X-ray diffraction
- Raman spectroscopy
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- art (ämneskategori)
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