Evidence of colour-modification induced charge and structural disorder in natural corundum: Spectroscopic studies of beryllium treated sapphires and rubies

IOP Conference Series: Materials Science and Engineering

Volumn 2, Issue , 2009, Pages

  Sastry, M D ^a   Mane, Sandesh N ^a   Gaonkar, Mahesh P ^a   Bagla, H ^b   Panjikar, J ^a   Ramachandran, K T ^a  

^a Opera House   (India)

^b KC College   (India)

Author keywords

[No Author keywords available]

Indexed keywords

DIFFUSION CONTROLLED; HIGH TEMPERATURE; IMPURITY ELEMENT; INDUCED CHARGES; SPECTROSCOPIC STUDIES; STRUCTURAL DISORDERS; TI COMPLEXES; VALENCE STATE;

BERYLLIUM; CHROMIUM; COLOR; CORUNDUM; CRYSTAL IMPURITIES; GLASS; GRAFTING (CHEMICAL); HEMATITE; RUBY; SINGLE CRYSTALS; SPECTROSCOPIC ANALYSIS; SYNTHESIS (CHEMICAL); TITANIUM COMPOUNDS;

SAPPHIRE;

EID: 84893514387     PISSN: 17578981     EISSN: 1757899X     Source Type: Conference Proceeding    
DOI: 10.1088/1757-899X/2/1/012007     Document Type: Conference Paper

References (6)

1. Wykoff R W G 1964 Crystal Structures. Vol.2. New York: John Wiley & Sons 6-8
2. Emmett J L, Scarratt K, Shane F. McClure, Moses T, Troy R. Douthit, Hughes R, Novak S, Shigley J E, Wang W, Owen Bordelon and Kane R E 2003 Gems & Gemology Summer 39 84-135
3. Sastry M D, Mane S N, Gaonkar M P, Athavale S, Desai S N, Sathyamoorthy K, Vijayan C, Bagla H, Henriques P, Panjikar J and Ramachandran K T Proc ICLA 2008,New Delhi.
4. Bhagavantam S and Venkatarayudu T 1939 'Ramaneffect in relation to Crystal Structure' Proc. Ind. Acad. Sci., 9 224-258
5. Cowley E.R. 1969 'Symmetry properties of normal modes of Vibration of Calcite and Corundum' Can J. Phys., 47 1381-1391
6. Ishi K 1978 'Lattice dynamics of Corundum' Phys. Chem. Minerals, 3 1-10