+ Resolve Article
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter

+ Translate
+ Subscribe to Site Feed
GeoScience Most Shared ContentMost Shared Content

Energy and long-range disorder in simple spinels

, : Energy and long-range disorder in simple spinels. Physics and Chemistry of Minerals 20(4): 228-241

Interionic potential calculations conducted on simple spinels in the framework of the Born model indicate that, within experimental uncertainties, observed control of P, T intensive variables on long-range disorder may be completely due to static effects. Parameterization of repulsive potentials allows us to rationalize the existing experimental data and quantify the variation of static energy, configuration entropy and static Gibbs free energy with temperature. The static energy of the investigated phases cannot be expressed in simple quadratic terms of the inversion parameter, as commonly assumed, but requires higher order terms. Knowledge of the longrange disorder at various temperatures allows us to express configurational entropy as a Maier-Kelley type polynomial expansion on temperature. As configurational entropy simply depends on the static part of the internal energy, the integration of the obtained functions in d T allows rapid evaluation of the effect of long-range disorder on the static part of energy.


DOI: 10.1007/bf00208136

Other references

Jung SungMin; Kim SukWeon; Ban SungHee; I.D.ngSu; Jung JongDuck; Chung HwaJee; Liu JangRyol; Lim YongPyo; Choi DongWoog, 2006: Glutamine accumulation inhibits root growth and lateral root formation in ginseng hairy roots. A hundred and ninety-three hairy root lines were produced from Korea ginseng (P. ginseng). These hairy root lines were classified into five different types, depending on their phenotypes. Metabolic profiling by 1H NMR analysis indicated that the g...

Chopin Christian, 1977: Margarite paragenesis in the high-pressure/ low temperature metamorphic facies; the Grand-Paradis Massif, French Alps. Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, Serie D: Sciences Naturelles 285(16): 1383-1386

Hilloowala, R.; Albinus, B.S., 1984: Illustrations from the Wellcome Institute Library. The origin of the Wellcome anatomical waxes. Albinus and the Florentine collection at La Specola. Medical History 28(4): 432-437

Godart G.; Durez M.; Robience Y.J., 1992: Global and regional technetium 99m dtpa epithelial transit. European Journal of Nuclear Medicine 19(8): 715

Anonymous, 1985: Accident death toll: 1984. Statistical Bulletin 66(2): 24-27

Symonds, A., 1949: Emotional problems in treatment and prognosis of epileptic children. Archives of Pediatrics 66(8): 355-362

Maelicke, A., 1992: An ion channel-gated adenylyl cyclase. Trends in Biochemical Sciences 17(2): 51-51

Leat W.M.F.; Clarke N.G.E.; Harrison F.A.; Cox R.W., 1982: Testicular lipids of rats given an essential fatty acid deficient diet supplemented with linoleate or linolenate. Proceedings of the Nutrition Society 41(2): 59A

Matsuda, T.; Maeda, S.; Baba, A.; Iwata, H., 1977: Stimulation of intestinal calcium atpase activity by cysteine. Cysteine stimulated the activity of the ATPase dependent on Ca2+, but not Mg2+ and Zn2+, in the microsomal and brush border fractions of rat duodenal mucosa. This ATPase was localized in the duodenum, but was not present in the jejunum or ileum. K...

Saviour, P.; Kumar, S.; Kiran, U.; Ravuri, R.Reddy.; Rao, V.R.; Ramachandra, N.Basappa., 2008: Allelic variants of DYX1C1 are not associated with dyslexia in India. Dyslexia is a hereditary neurological disorder that manifests as an unexpected difficulty in learning to read despite adequate intelligence, education, and normal senses. The prevalence of dyslexia ranges from 3 to 15% of the school aged children....