Title: The effect of external factors on dielectric permittivity of Rochelle salt: humidity, annealing, stresses, electric field
Authors:

	A.G.Slivka (Uzhgorod National University, 54 Voloshin Street, 88000 Uzhgorod, Ukraine) ,
	V.M.Kedyulich (Uzhgorod National University, 54 Voloshin Street, 88000 Uzhgorod, Ukraine) ,
	R.R.Levitskii (Institute for Condensed Matter Physics, 1 Svientsitskii Street, 79011 Lviv, Ukraine) ,
	A.P.Moina (Institute for Condensed Matter Physics, 1 Svientsitskii Street, 79011 Lviv, Ukraine) ,
	M.O.Romanyuk (Ivan Franko Lviv National University, 8 Kyryla and Mefodiya Street, 79005 Lviv, Ukraine) ,
	A.M.Guivan (Uzhgorod National University, 54 Voloshin Street, 88000 Uzhgorod, Ukraine)

The effect of external factors, such as dessicating/wetting, thermal annealing, uniaxial and hydrostatic pressure, on the dielectric permittivity of Rochelle salt crystals is investigated. The obtained results are compared with the available literature data and analyzed within the phenomenological Landau approach. A significant effect of the internal polar point defects in crystals and storage conditions on the dielectric permittivity is shown.

Key words: Rochelle salt, pressure, electric field, defects, annealing, humidity
PACS: 77.80.Bh, 77.22.Ch