lithium niobate / Data / thermal-expansion-c

Thermal expansion coefficient parallel to c

Spread

α₃₃ 1/K; one row per variant and wavelength

Each mark is one record; bars are stated ranges, whiskers stated uncertainties. Filled marks: P, P-comp, P-db; hollow: S, V, C, P(abs). Hover a mark for its source. Each row has its own axis; no mean or fit is drawn.

Records

2 variants

Value	Unit	Variant	Conditions	Frame	Source	Locator	Status
4.1×10⁻⁶ default record	1/K	Congruent LiNbO3 (CLN)	T 300 K	–	Volk & Wöhlecke, Springer Series in Materials Science 115 (2009) original: Nikogosyan 2005; Gallagher et al., Ferroelectrics 75, 71 (1987)	Table 1.1, p. 3	P-comp
alpha_c in circulating sources spans about 4-7.5 ppm/K; Kim & Smith 1969 (primary) not read. Weis & Gaylord 1985 p. 195 notes that c contracts from 600 to 1000 C.
7.5×10⁻⁶	1/K	Congruent LiNbO3 (CLN)	T 25 °C	–	Crystal Technology, Inc. (1999)	–	V
6×10⁻⁶ default record	1/K	Stoichiometric or near-stoichiometric LiNbO3 (SLN) near-stoichiometric	T 300 K	–	Volk & Wöhlecke, Springer Series in Materials Science 115 (2009)	Table 1.1, p. 3	P-comp
alpha_c depends on composition, which may explain part of the spread across sources.

Congruent LiNbO3 (CLN)

P-comp

4.1×10⁻⁶1/K

T 300 K; default record

alpha_c in circulating sources spans about 4-7.5 ppm/K; Kim & Smith 1969 (primary) not read. Weis & Gaylord 1985 p. 195 notes that c contracts from 600 to 1000 C.

Volk & Wöhlecke, Springer Series in Materials Science 115 (2009), Table 1.1, p. 3original: Nikogosyan 2005; Gallagher et al., Ferroelectrics 75, 71 (1987)

Congruent LiNbO3 (CLN)

7.5×10⁻⁶1/K

T 25 °C

Crystal Technology, Inc. (1999)

Stoichiometric or near-stoichiometric LiNbO3 (SLN)near-stoichiometric

P-comp

6×10⁻⁶1/K

T 300 K; default record

alpha_c depends on composition, which may explain part of the spread across sources.

Volk & Wöhlecke, Springer Series in Materials Science 115 (2009), Table 1.1, p. 3

Endpoints

CC BY 4.0; cite the original source of each value

all records /api/v1/properties/thermal-expansion-c.json cln /api/v1/properties/thermal-expansion-c/cln.json sln /api/v1/properties/thermal-expansion-c/sln.json CSV, all properties /api/v1/properties.csv

curl -s https://lithium-niobate.com/api/v1/properties/thermal-expansion-c.json

This page carries the same records as schema.org Dataset JSON-LD. All endpoints: API.