CRISTALOGRAFIA

BIBLIOGRAFIA NACIONAL QUIMICA

2000

Mercuric iodide platelets were grown in the HgI 2 }HI}H 2 O system by solvent evaporation at constant temperature. Di!erent solution temperatures, growing times and stirring conditions were studied. In order to determine the best growing parameters the chemistry of the HgI 2 }HI}H 2 O system was studied. Complexes [HgI 3 ]~ and [HgI 4 ]~2 were identi"ed and quanti"ed in the solution by visible and UV spectrometry, according to the R ratio ([HgI 2 ]/[HI]). Solution oxidation and I~3 interference were eliminated performing growth in high purity Argon atmosphere. Good mercuric iodide platelets, up to 6.0]7.0]1.5mm3 in size, were obtained with appropriate argon #ow, temperature and growing time, for several independent experiences. Platelets were observed by optical microscopy and the absence of possible dislocations was con"rmed by studying etch pits density after etching with ethanol}trichloroethylene. Nonexistence of occluded water and hydrocarbons was con"rmed by Fourier transform infrared spectroscopy and was related to results obtained for mercuric iodide crystals grown by the physical vapor transport method. Detectors were made with the platelets and their apparent resistivity, current density and X-ray performance were measured. Discussions about future improvements of growing mercuric iodide platelets in the HgI 2 }HI}H 2 O system and comparison of this method with others are included.

Elsevier Science B.V

2000

Información sobre Derechos de Autor

(Por favor lea este aviso antes de abrir los documentos u objetos)

La legislación uruguaya protege el derecho de autor sobre toda creación literaria, científica o artística, tanto en lo que tiene que ver con sus derechos morales, como en lo referente a los derechos patrimoniales con sujeción a lo establecido por el derecho común y las siguientes leyes (LEY 9.739 DE 17 DE DICIEMBRE DE 1937 SOBRE PROPIEDAD LITERARIA Y ARTISTICA CON LAS MODIFICACIONES INTRODUCIDAS POR LA LEY DE DERECHO DE AUTOR Y DERECHOS CONEXOS No. 17.616 DE 10 DE ENERO DE 2003, LEY 17.805 DE 26 DE AGOSTO DE 2004, LEY 18.046 DE 24 DE OCTUBRE DE 2006 LEY 18.046 DE 24 DE OCTUBRE DE 2006)

ADVERTENCIA - La consulta de este documento queda condicionada a la aceptación de las siguientes condiciones de uso: Este documento es únicamente para usos privados enmarcados en actividades de investigación y docencia. No se autoriza su reproducción con fines de lucro. Esta reserva de derechos afecta tanto los datos del documento como a sus contenidos. En la utilización o cita de partes debe indicarse el nombre de la persona autora.

PDF

Inglés

Artículo

DOI:10.1016/S0022-0248(00)00461-9