The thermoelastic behavior of clintonite up to 10 GPa and 1,000°C (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• The thermoelastic behavior of clintonite up to 10 GPa and 1,000°C (Articolo in rivista) (literal)

Anno

• 2012-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1007/s00269-012-0493-0 (literal)

Alternative label

• Gatta G.D., Merlini M., Liermann H-P., Rothkirch A., Gemmi M., Pavese A (2012)
  The thermoelastic behavior of clintonite up to 10 GPa and 1,000°C
  in Physics and chemistry of minerals
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Gatta G.D., Merlini M., Liermann H-P., Rothkirch A., Gemmi M., Pavese A (literal)

Pagina inizio

• 385 (literal)

Pagina fine

• 397 (literal)

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• http://link.springer.com/content/pdf/10.1007%2Fs00269-012-0493-0 (literal)

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• 39 (literal)

Rivista

• Physics and chemistry of minerals (Rivista)

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• 13 (literal)

Note

• ISI Web of Science (WOS) (literal)
• Google Scholar (literal)
• Scopus (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• G. Diego Gatta (&) ? M. Merlini ? A. Pavese Dipartimento of Scienze della Terra, Universita' degli Studi di Milano, Via Botticelli, 23, 20133 Milan, Italy e-mail: diego.gatta@unimi.it G. Diego Gatta ? A. Pavese CNR-Istituto per la Dinamica dei Processi Ambientali, Milan, Italy H.-P. Liermann ? A. Rothkirch DESY, HASYLAB, PETRA III, Notkestr. 85, 22607 Hamburg, Germany M. Gemmi Center for Nanotechnology Innovation@NEST, Istituto Italiano di Tecnologia, Pisa, Italy (literal)

Titolo

• The thermoelastic behavior of clintonite up to 10 GPa and 1,000°C (literal)

Abstract

• The thermoelastic behavior of a natural clintonite-1M [with composition: Ca1.01 (Mg2.29Al0.59Fe0.12 )R3.00 (Si1.20Al2.80)R4.00O10(OH)2] has been investigated up to 10 GPa (at room temperature) and up to 960?C (at room pressure) by means of in situ synchrotron single-crystal and powder diffraction, respectively. No evidence of phase transition has been observed within the pressure and temperature range investigated. P-V data fitted with an isothermal third-order Birch-Murnaghan equation of state (BM-EoS) give V0 = 457.1(2) A? 3 , KT0 = 76(3)GPa, and K 0 = 10.6(15). The evolution of the ''Eulerian finite strain'' versus ''normalized stress'' shows a linear positive trend. The linear regression yields Fe(0) = 76(3) GPa as intercept value, and the slope of the regression line leads to a K 0 value of 10.6(8). The evolution of the lattice parameters with pressure is significantly anisotropic [b(a) = 1/3KT0(a) = 0.0023(1) GPa -1 ; b(b) = 1/3KT0(b) = 0.0018(1) GPa -1 ; b(c) = 1/KT0(c) = 0.0072(3) GPa -1 ]. The b-angle increases in response to the applied P, with: bP = b0 ? 0.033(4) P (P in GPa). The structure refinements of clintonite up to 10.1 GPa show that, under hydrostatic pressure, the structure rearranges by compressing mainly isotropically the interlayer Ca-polyhedron. The bulk modulus of the Ca-polyhedron, described using a second-order BM-EoS, is KT0 (Ca-polyhedron) = 41(2) GPa. The compression of the bond distances between calcium and the basal oxygens of the tetrahedral sheet leads, in turn, to an increase in the ditrigonal distortion of the tetrahedral ring, with qa/qP & 0.1?/GPa within the P-range investigated. The Mg-rich octahedra appear to compress in response to the applied pressure, whereas the tetrahedron appears to behave as a rigid unit. The evolution of axial and volume thermal expansion coefficient a with temperature was described by the polynomial a(T) = a0 ? a1T -1/2 . The refined parameters for clintonite are as follows: a0 = 2.78(4) 10 -5 ?C -1 and a1 = -4.4(6) 10 -5 ?C 1/2 for the unit-cell volume; a0(a) = 1.01(2) 10 -5 ?C -1 and a1(a) = -1.8(3) 10 -5 ?C 1/2 for the a-axis; a0(b) = 1.07(1) 10 -5 ?C -1 and a1(b) = -2.3(2) 10 -5 ?C 1/2 for the b-axis; and a0 (c) = 0.64(2) 10 -5 ?C -1 and a1 (c) = -7.3(30) 10 -6 ?C 1/2 for the c-axis. The b-angle appears to be almost constant within the given T-range. No structure collapsing in response to the T-induced dehydroxylation was found up to 960?C. The HP- and HT-data of this study show that in clintonite, the most and the less expandable directions do not correspond to the most and the less compressible directions, respectively. A comparison between the thermoelastic parameters of clintonite and those of true micas was carried out. (literal)

Prodotto di

• Strategie di valutazione e valorizzazione di riserve idriche e georisorse territoriali (TA.P04.036.001) (Modulo)
• Processi geodinamici e pericolosità geologica: indagini interdisciplinari geologico-geofisiche (TA.P05.020.001) (Modulo)
• Istituto per la dinamica dei processi ambientali (IDPA) (Istituto)

Autore CNR

• giacomo diego Gatta (Unità di personale esterno)

Incoming links:

Prodotto

• Istituto per la dinamica dei processi ambientali (IDPA) (Istituto)
• Strategie di valutazione e valorizzazione di riserve idriche e georisorse territoriali (TA.P04.036.001) (Modulo)
• Processi geodinamici e pericolosità geologica: indagini interdisciplinari geologico-geofisiche (TA.P05.020.001) (Modulo)

Autore CNR di

• giacomo diego Gatta (Unità di personale esterno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Physics and chemistry of minerals (Rivista)