Temperature operated infrared nonlinear optical materials based on Tl4HgI6

Piasecki, M.; Lakshminarayana, G.; Fedorchuk, A.O.; Kushnir, O. S.; Franiv, V.; Франів, А. В.; Myronchuk, G.L.; Pluciński, K.J.

doi:10.1007/s10854-012-0903-6

Cited by 23 publications

(29 citation statements)

References 20 publications

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“…Using common methods, one obtains the optical pseudo-gap values  . This dissimilarity agrees with structural differences of the above compounds (we have c < a for Tl 4 HgI 6 [19] and c > a for Tl 4 CdI 6 ). Despite the parameter c/a defining tetragonal distortion of a virtual cubic structure in the Tl 4 CdI 6 crystals is not so large (c/a = 1.04), the optical anisotropy represented by the birefringence is very high.…”

Section: Fig 2 Room-temperature Diffractogram Of Tl4cdi6 Crystals (supporting

confidence: 87%

“…This does not confirm the results of the study [4] where a phase transition has been detected at about 403 K, issuing from the temperature behaviours of the conductivity and the dielectric permittivity (see also further discussion). We remind in this respect that the thermal expansion of the isomorphous Tl 4 HgI 6 crystals behaves quite differently and reveals distinct anomalies observed in the same temperature region (410 and 450 K respectively in the cooling and heating runs -see [19]), which have been ascribed to the phase transitions. Moreover, we have obtained no clear differences between the heating and cooling runs, which might have evidenced a hysteresis.…”

Section: Fig 2 Room-temperature Diffractogram Of Tl4cdi6 Crystals (mentioning

confidence: 86%

“…Since the former compound is relatively better investigated and some of the appropriate results have been reported in our recent work [19], the aim of the present work is to study the structure, thermal expansion, and the optical anisotropy of Tl 4 CdI 6 , in order to get more information on the prospects of the latter crystal concerned with nonlinear optics.…”

Section: Introductionmentioning

confidence: 99%

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Growth, crystal structure, thermal properties and optical anisotropy of Tl4CdI6 single crystals

Франів¹,

Kushnir²,

Girnyk³

et al. 2013

Ukr. J. Phys. Opt.

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Abstract. We report on the growth and initial thermal and optical characterisation of a single-crystalline ternary halide, Tl 4 CdI 6 . The crystal is described by the centrosymmetric tetragonal class P4/mnc at the room temperature. The parameters of linear thermal expansion are studied in the temperature region 330-500 K. The crystal is optically positive and reveals very high optical anisotropy (the birefringence ~ 0.13 at 633 nm). Its optical pseudo-gap value corresponds to widegap semiconductors. A broad maximum at 400-410 K found in the temperature dependence of IR radiation-induced second harmonic generation may be indication of a polymorphic phase transformation.

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Section: Fig 2 Room-temperature Diffractogram Of Tl4cdi6 Crystals (supporting

confidence: 87%

Section: Fig 2 Room-temperature Diffractogram Of Tl4cdi6 Crystals (mentioning

confidence: 86%

Section: Introductionmentioning

confidence: 99%

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Growth, crystal structure, thermal properties and optical anisotropy of Tl4CdI6 single crystals

Франів¹,

Kushnir²,

Girnyk³

et al. 2013

Ukr. J. Phys. Opt.

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“…Capacitive dilatometers are used for very small samples [45] of materials used in electronics. An example of a liquid-to-solid dilatometer can be found in [10], in which cylindrical castings in a mould of sand enclosed by steel plates were used.…”

Section: Dilatometer (Volume)mentioning

confidence: 99%

A Broad Literature Review of Density Measurements of Liquid Cast Iron

Hellström

Diószegi

Diaconu

2017

Metals

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Abstract:The literature on density measurements, with a particular interest in methods suitable for liquid cast iron, is reviewed. Different measurement methods based on a number of physical properties are highlighted and compared. Methods for the calculation of density are also reviewed, and the influence of alloying elements on density is, to some extent, discussed. The topic is of essence for the understanding of the material behaviour at solidification, which is pivotal in software applications for casting simulation. Since a deeper understanding of the relationship between the density of liquid cast iron and volume expansion is necessary, the conclusion that further research within the field is needed lies close at hand.

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“…At now reports of an episodic character are being published in the periodical literature which deal with the possibility of obtaining one class of crystals of the А 4 ВХ 6 group (in particular, such as Tl 4 CdI 6 ) [1][2][3][4]) and studying their optical, mechanical and spectral characteristics [5][6][7][8][9]. It has been expected that along with the conservation of relatively high component of ionic bond the structural anisotropy should be large.…”

mentioning

confidence: 99%