The interaction of defects in a mayenite structure

Standard

The interaction of defects in a mayenite structure. / Shkerin, Sergey N.; Ulyanova, Ekaterina S.; Naumov, Sergey V. et al.

In: Physical Chemistry Chemical Physics, Vol. 22, No. 47, 21.12.2020, p. 27818-27828.

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

Harvard

Shkerin, SN, Ulyanova, ES, Naumov, SV, Shmakov, AN & Tolkacheva, AS 2020, 'The interaction of defects in a mayenite structure', Physical Chemistry Chemical Physics, vol. 22, no. 47, pp. 27818-27828. https://doi.org/10.1039/d0cp05107a

APA

Shkerin, S. N., Ulyanova, E. S., Naumov, S. V., Shmakov, A. N., & Tolkacheva, A. S. (2020). The interaction of defects in a mayenite structure. Physical Chemistry Chemical Physics, 22(47), 27818-27828. https://doi.org/10.1039/d0cp05107a

Vancouver

Shkerin SN, Ulyanova ES, Naumov SV, Shmakov AN, Tolkacheva AS. The interaction of defects in a mayenite structure. Physical Chemistry Chemical Physics. 2020 Dec 21;22(47):27818-27828. doi: 10.1039/d0cp05107a

Author

Shkerin, Sergey N. ; Ulyanova, Ekaterina S. ; Naumov, Sergey V. et al. / The interaction of defects in a mayenite structure. In: Physical Chemistry Chemical Physics. 2020 ; Vol. 22, No. 47. pp. 27818-27828.

BibTeX

@article{98fa22e519e14f7583529fe315c450dc,

title = "The interaction of defects in a mayenite structure",

abstract = "Calcium aluminate Ca12Al14O33 initially known as cement compound after a series of structural refinements presented a complex cubic structure. It demonstrates a surprising feature consisting of the occurrence of spherical cavities named as cages. After this, mayenite is regarded as a kind of anti-zeolite. An alternative representation of such compounds formulated as highly non-stoichiometric garnets is highlighted in the present study. Mayenite is described as non-stoichiometric garnet {Ca3-x□x}1[Ca, Al]2Al3O12-x using the Raman spectroscopy. The dependence of phase diagram Al2O3-CaO in the region near the mayenite composition on the oxygen activity is summarized regarding its structural deficiency. It is pointed that cage is the result of defects association whereas structural defects tend to interact with each other. The main consequence of such interaction is a spontaneous formation of a core-shell structure. It is evidenced by the presence of a near-surface layer of small thickness over a compact oxide. The local symmetry of the mayenite structure at room temperature in oxidized and reduced (electride) state was studied by Raman spectroscopy which revealed the presence of luminescence without the rare-earths' doping.",

author = "Shkerin, {Sergey N.} and Ulyanova, {Ekaterina S.} and Naumov, {Sergey V.} and Shmakov, {Aleksandr N.} and Tolkacheva, {Anna S.}",

year = "2020",

month = dec,

day = "21",

doi = "10.1039/d0cp05107a",

language = "English",

volume = "22",

pages = "27818--27828",

journal = "Physical Chemistry Chemical Physics",

issn = "1463-9076",

publisher = "Royal Society of Chemistry",

number = "47",

}

RIS

TY - JOUR

T1 - The interaction of defects in a mayenite structure

AU - Shkerin, Sergey N.

AU - Ulyanova, Ekaterina S.

AU - Naumov, Sergey V.

AU - Shmakov, Aleksandr N.

AU - Tolkacheva, Anna S.

PY - 2020/12/21

Y1 - 2020/12/21

N2 - Calcium aluminate Ca12Al14O33 initially known as cement compound after a series of structural refinements presented a complex cubic structure. It demonstrates a surprising feature consisting of the occurrence of spherical cavities named as cages. After this, mayenite is regarded as a kind of anti-zeolite. An alternative representation of such compounds formulated as highly non-stoichiometric garnets is highlighted in the present study. Mayenite is described as non-stoichiometric garnet {Ca3-x□x}1[Ca, Al]2Al3O12-x using the Raman spectroscopy. The dependence of phase diagram Al2O3-CaO in the region near the mayenite composition on the oxygen activity is summarized regarding its structural deficiency. It is pointed that cage is the result of defects association whereas structural defects tend to interact with each other. The main consequence of such interaction is a spontaneous formation of a core-shell structure. It is evidenced by the presence of a near-surface layer of small thickness over a compact oxide. The local symmetry of the mayenite structure at room temperature in oxidized and reduced (electride) state was studied by Raman spectroscopy which revealed the presence of luminescence without the rare-earths' doping.

AB - Calcium aluminate Ca12Al14O33 initially known as cement compound after a series of structural refinements presented a complex cubic structure. It demonstrates a surprising feature consisting of the occurrence of spherical cavities named as cages. After this, mayenite is regarded as a kind of anti-zeolite. An alternative representation of such compounds formulated as highly non-stoichiometric garnets is highlighted in the present study. Mayenite is described as non-stoichiometric garnet {Ca3-x□x}1[Ca, Al]2Al3O12-x using the Raman spectroscopy. The dependence of phase diagram Al2O3-CaO in the region near the mayenite composition on the oxygen activity is summarized regarding its structural deficiency. It is pointed that cage is the result of defects association whereas structural defects tend to interact with each other. The main consequence of such interaction is a spontaneous formation of a core-shell structure. It is evidenced by the presence of a near-surface layer of small thickness over a compact oxide. The local symmetry of the mayenite structure at room temperature in oxidized and reduced (electride) state was studied by Raman spectroscopy which revealed the presence of luminescence without the rare-earths' doping.

UR - http://www.scopus.com/inward/record.url?scp=85098199069&partnerID=8YFLogxK

U2 - 10.1039/d0cp05107a

DO - 10.1039/d0cp05107a

M3 - Article

C2 - 33245304

AN - SCOPUS:85098199069

VL - 22

SP - 27818

EP - 27828

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

SN - 1463-9076

IS - 47

ER -

ID: 27375210