Ferromagnetic ordering temperature and internal pressure in manganites La 0.7 Ca 0.3−x Sr x MnO 3

Autor:	A. B. Mukhin, Alexander N. Ulyanov, N.Yu. Starostyuk, G. V. Gusakov, V.A. Borodin
Rok vydání:	2001
Předmět:	Ionic radius Analytical chemistry chemistry.chemical_element Mineralogy General Chemistry Crystal structure Condensed Matter Physics Manganite Ferromagnetism chemistry Phase (matter) Materials Chemistry Lanthanum Orthorhombic crystal system Néel temperature
Zdroj:	Solid State Communications. 118:103-105
ISSN:	0038-1098
DOI:	10.1016/s0038-1098(01)00035-7
Popis:	Lanthanum manganites La 0.7 Ca 0.3−x Sr x MnO 3 were synthesized and investigated. The jump of T c at the magnetic ordering temperature dependence on concentration at x =0.15 was revealed. The structural phase transition from the orthorhombic phase ( x x ≥0.15) corresponds to that concentration. Substitution of Ca 2+ ion by Sr 2+ leads to the increasing of the average ionic radius in A position (position of La, Ca, Sr) and plays the role of internal pressure. The revealed temperature T c jump shows that the effect of internal pressure depends on the crystal structure of manganites.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::817fc83f117294cf651f2fc89b1ab217 https://doi.org/10.1016/s0038-1098(01)00035-7 Zobrazit plný text záznamu Full Text from ScienceDirect