Lanthanum Fluoride (LaF3)

	Lanthanum Fluoride (LaF3) Data Sheet
	Lanthanum Fluoride (LaF3) MSDS
	Lanthanum Fluoride (LaF3) Ion Selective Electrodes

Lanthanum Fluoride (LaF3)

Lanthanum Fluoride is not often used as an optical material. Lanthanum Fluoride is usually doped with Europium at a nominal level of 0.3% mole. In this form, the usual application is as the active element in an ion-selective electrode for the detection and measurement of Fluoride ions in solution.

Product Data

Transmission Range :	0.2 to 11 μm
Refractive Index :	No 1.506 at 0.55 μm
Reflection Loss :	10.3% at 0.55 μm
Absorption Coefficient :	n/a
Reststrahlen Peak :	n/a
dn/dT :	n/a
dn/dμ = 0 :	n/a
Density :	5.94
Melting Point :	1493 °C (1)
Thermal Conductivity ;	5.1 W m^-1 K^-1 at 300K
Thermal Expansion ;	11x10^-6 /K (para) 15.8x10^-6 /K (perp) at 298K (2)
Hardness ;	Moh 4.5
Specific Heat Capacity :	506 J Kg^-1 K^-1
Dielectric Constant :	14 (3)
Youngs Modulus (E) :	n/a
Shear Modulus (G) :	n/a
Bulk Modulus (K) :	n/a
Elastic Coefficients :	n/a
Apparent Elastic Limit :	n/a
Poisson Ratio :	n/a
Solubility :	Insoluble in water
Molecular Weight :	195.9
Class/Structure :	Trigonal (hex), P6₃/mcm (2) ,no cleavage

To download this data or our MSDS safety data sheet as a pdf, please click on the links at the top of the page. To expand the transmission graphs, please click on the image.

Images

Refractive Index

No = Ordinary Ray Ne = Extraordinary Ray

µm	No	Ne	µm	No	Ne	µm	No	Ne
0.254	1.656	1.649	0.405	1.618	1.612	0.436	1.617	1.609
0.547	1.606	1.602

Product Notes

Lanthanum Fluoride is grown as small ingots of about 10mm diameter as it is difficult to anneal. Doped with Europium, it is a pale yellow colour.

REFERENCES:
(1) Jones and Shand, J.Crys.Growth. 2 (1968) p3611

(2) Sher, Solomon, Lee, and Meuller. Phys.Rev. 144, p593 (1966)

(3) Electronic Processes in Ionic Crystals (OU Press, NY, 1940) p.41

Data provided is extracted from our technical handbook of materials. While every attempt has been made to verify the source of the information, Crystran Ltd accept no responsibility for accuracy of data

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