Effect of Nd3+doping upon ferroelectric properties of LaBGeO5crystals

Autor:	I. V. Shnaidshtein, S. N. Gorshkov, Yoshiaki Uesu, Akira Onodera, Boris A. Strukov
Rok vydání:	1998
Předmět:	Phase transition Materials science Birefringence Condensed matter physics Impurity Transition temperature Critical phenomena Doping Dielectric Condensed Matter Physics Ferroelectricity Electronic Optical and Magnetic Materials
Zdroj:	Ferroelectrics. 218:249-255
ISSN:	1563-5112 0015-0193
DOI:	10.1080/00150199808227152
Popis:	The results of experimental study of thermal, optical and dielectric properties of La1-x Nd x BGeO5 crystals with a small substitutional impurity of Nd3+ ions (x = 0.03; 0.05) are presented. It was proposed that Nd3+ ions can be considered as strong “random local transition temperature” — type defects which can affect the critical phenomena. The relevant effects were revealed from temperature dependences of the specific heat, birefringence and dielectric constant. The progressive smearing of the phase transitions was observed from ϵ(T) and Δn(T) dependences while Cp(T) behaviour near Tc gave a chance to compare the critical indexes for pure and dopped crystals.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::a3cf2dd0a47bb76e80efc40afa9f9459 https://doi.org/10.1080/00150199808227152 Zobrazit plný text záznamu