Stability of (Cs, K)Al4Be5B11O28 (londonite) at high pressure and high temperature: A potential neutron absorber material

G. Diego Gatta; Pietro Vignola; Yongjae Lee

doi:10.1007/s00269-011-0416-5

Stability of (Cs, K)Al₄Be₅B₁₁O₂₈ (londonite) at high pressure and high temperature: A potential neutron absorber material

G. Diego Gatta, Pietro Vignola, Yongjae Lee

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

11 Citations (Scopus)

Abstract

The stability and the thermo-elastic behaviour of a natural londonite has been investigated up to 1,273(3) K (at 0.0001 GPa) and up to 4.85(5) GPa (at 298 K) by means of in situ X-ray powder diffraction. Up to 973 K, no evidence of phase transition or anomalous thermo-elastic behaviour was observed. At T > 973 K, londonite shows the first evidence of an irreversible structure destabilisation. The volume thermal expansion coefficient between 298 and 973 K is α₀ = 2.38(6)·10^-5 K^-1. Londonite shows an elastic behaviour up to 4.85 GPa. No phase transition has been observed within the pressure range investigated. P-V data fitted with a second-order Birch-Murnaghan equation of state give V₀ = 389.1(1)Å³ and K_T0 = 280(12) GPa. On the basis of the good thermo-elastic behaviour, substantiated by the significantly low compressibility, the modest thermal expansion up to 1,000 K and the significantly high amount of boron (B₂O₃ ~ 50wt%), londonite-type materials could be considered as potential inorganic host for ¹⁰B in composite neutron-absorbing materials.

Original language	English
Pages (from-to)	429-434
Number of pages	6
Journal	Physics and Chemistry of Minerals
Volume	38
Issue number	6
DOIs	https://doi.org/10.1007/s00269-011-0416-5
Publication status	Published - 2011 Jun

Bibliographical note

Funding Information:
The authors are grateful to N. Marinoni and E. Ferrari (Milan). The research was financially supported by University of Milan (PUR2009) and CNR-IDPA. Y. Lee thanks the support by the National Research Foundation through the Nuclear R&D Program (Grant No. M2AM06-2008-03931). Experiments at PAL were supported by Ministry of Education, Science and Technology of the Korean Government and POSTECH. Two anonymous reviewers and the Editor M. Rieder are thanked for their suggestions.

All Science Journal Classification (ASJC) codes

Materials Science(all)
Geochemistry and Petrology

Access to Document

10.1007/s00269-011-0416-5

Cite this

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title = "Stability of (Cs, K)Al4Be5B11O28 (londonite) at high pressure and high temperature: A potential neutron absorber material",

abstract = "The stability and the thermo-elastic behaviour of a natural londonite has been investigated up to 1,273(3) K (at 0.0001 GPa) and up to 4.85(5) GPa (at 298 K) by means of in situ X-ray powder diffraction. Up to 973 K, no evidence of phase transition or anomalous thermo-elastic behaviour was observed. At T > 973 K, londonite shows the first evidence of an irreversible structure destabilisation. The volume thermal expansion coefficient between 298 and 973 K is α0 = 2.38(6)·10-5 K-1. Londonite shows an elastic behaviour up to 4.85 GPa. No phase transition has been observed within the pressure range investigated. P-V data fitted with a second-order Birch-Murnaghan equation of state give V0 = 389.1(1){\AA}3 and KT0 = 280(12) GPa. On the basis of the good thermo-elastic behaviour, substantiated by the significantly low compressibility, the modest thermal expansion up to 1,000 K and the significantly high amount of boron (B2O3 ~ 50wt%), londonite-type materials could be considered as potential inorganic host for 10B in composite neutron-absorbing materials.",

author = "Gatta, {G. Diego} and Pietro Vignola and Yongjae Lee",

note = "Funding Information: The authors are grateful to N. Marinoni and E. Ferrari (Milan). The research was financially supported by University of Milan (PUR2009) and CNR-IDPA. Y. Lee thanks the support by the National Research Foundation through the Nuclear R&D Program (Grant No. M2AM06-2008-03931). Experiments at PAL were supported by Ministry of Education, Science and Technology of the Korean Government and POSTECH. Two anonymous reviewers and the Editor M. Rieder are thanked for their suggestions.",

year = "2011",

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doi = "10.1007/s00269-011-0416-5",

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T2 - A potential neutron absorber material

AU - Gatta, G. Diego

AU - Vignola, Pietro

AU - Lee, Yongjae

N1 - Funding Information: The authors are grateful to N. Marinoni and E. Ferrari (Milan). The research was financially supported by University of Milan (PUR2009) and CNR-IDPA. Y. Lee thanks the support by the National Research Foundation through the Nuclear R&D Program (Grant No. M2AM06-2008-03931). Experiments at PAL were supported by Ministry of Education, Science and Technology of the Korean Government and POSTECH. Two anonymous reviewers and the Editor M. Rieder are thanked for their suggestions.

PY - 2011/6

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N2 - The stability and the thermo-elastic behaviour of a natural londonite has been investigated up to 1,273(3) K (at 0.0001 GPa) and up to 4.85(5) GPa (at 298 K) by means of in situ X-ray powder diffraction. Up to 973 K, no evidence of phase transition or anomalous thermo-elastic behaviour was observed. At T > 973 K, londonite shows the first evidence of an irreversible structure destabilisation. The volume thermal expansion coefficient between 298 and 973 K is α0 = 2.38(6)·10-5 K-1. Londonite shows an elastic behaviour up to 4.85 GPa. No phase transition has been observed within the pressure range investigated. P-V data fitted with a second-order Birch-Murnaghan equation of state give V0 = 389.1(1)Å3 and KT0 = 280(12) GPa. On the basis of the good thermo-elastic behaviour, substantiated by the significantly low compressibility, the modest thermal expansion up to 1,000 K and the significantly high amount of boron (B2O3 ~ 50wt%), londonite-type materials could be considered as potential inorganic host for 10B in composite neutron-absorbing materials.

AB - The stability and the thermo-elastic behaviour of a natural londonite has been investigated up to 1,273(3) K (at 0.0001 GPa) and up to 4.85(5) GPa (at 298 K) by means of in situ X-ray powder diffraction. Up to 973 K, no evidence of phase transition or anomalous thermo-elastic behaviour was observed. At T > 973 K, londonite shows the first evidence of an irreversible structure destabilisation. The volume thermal expansion coefficient between 298 and 973 K is α0 = 2.38(6)·10-5 K-1. Londonite shows an elastic behaviour up to 4.85 GPa. No phase transition has been observed within the pressure range investigated. P-V data fitted with a second-order Birch-Murnaghan equation of state give V0 = 389.1(1)Å3 and KT0 = 280(12) GPa. On the basis of the good thermo-elastic behaviour, substantiated by the significantly low compressibility, the modest thermal expansion up to 1,000 K and the significantly high amount of boron (B2O3 ~ 50wt%), londonite-type materials could be considered as potential inorganic host for 10B in composite neutron-absorbing materials.

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