A STUDY OF THE HOMOGENEITY AND DEVIATIONS FROM STOICHIOMETRY IN MERCURIC IODIDE

被引：27

作者：

BURGER, A

MORGAN, S

HE, C

SILBERMAN, E

VANDENBERG, L

ORTALE, C

FRANKS, L

SCHIEBER, M

机构：

[1] EG&G EM INC, SANTA BARBARA OPERAT, GOLETA, CA 93116 USA

[2] HEBREW UNIV JERUSALEM, SCH APPL SCI, IL-91904 JERUSALEM, ISRAEL

来源：

JOURNAL OF CRYSTAL GROWTH | 1990年 / 99卷 / 1-4期

关键词：

D O I：

10.1016/S0022-0248(08)80068-1

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

We have been able to determine the deviations from stoichiometry of mercuric iodide (HgI2) by using differential scanning calorimetry (DSC). Mercury excess or iodine deficiency in mercuric iodide can be evaluated from the eutectic melting of α-Hgl2-Hg2I2 at 235 °C, which appears as an additional peak in DSC thermograms. I2 excess can be found from the existence of the I2-α-HgI2 eutectic melting at 103°C. An additional DSC peak appears in some samples around 112°C, that could be explained by the presence of iodine inclusions. Using resonance fluorescence spectroscopy (RFS) we have been able to determine the presence of free I2 that is released by samples during the heating at 120 °C (crystal growth temperature), thus giving additional support to the above DSC results. © 1990, Elsevier Science Publishers B.V.. All rights reserved.

引用

页码：988 / 993

页数：6

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