Structures and thermal stability of the α-LiNH4SO4 polytypes doped with Er3+ and Yb3+

Sabalisck, N.P.; Guzmán-Afonso, C.; González-Silgo, C.; Torres, M.E.; Pasán, J.; del-Castillo, J.; Ramos-Hernández, D.; Hernández-Suárez, A.; Mestres, L.

doi:10.1107/S2052520616019028

Acta Crystallographica Section B
Acta Crystallographica
Section B STRUCTURAL SCIENCE, CRYSTAL ENGINEERING AND MATERIALS

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Figure 12
Temperature dependence of the s parameter, measured between 190 and 550 K in cycle 1 (on heating by red stars and on cooling by blue squares) for pure (a) α-LAS, (b) α-LAS Yb 1.4 mol% and (c) β-LAS single crystals. Vertical lines indicate the temperature for the ferroelastic–ferroelectric (black line) and ferroelectric–paraelectric (olive line) phase transitions, approximately.

STRUCTURAL SCIENCE
CRYSTAL ENGINEERING
MATERIALS

ISSN: 2052-5206

Volume 73| Part 1| February 2017| Pages 122-133

https://doi.org/10.1107/S2052520616019028

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