Effect of Fe doping on structure, charge ordering, magnetic and transport properties of La0.33Ca0.67Mn1−yFeyO3(0≤y≤0.06)

Autor:	Ph. Monod, Yu. P. Stepanov, V S Zahvalinskii, V S Vikhnin, Jacques G. Noudem, J Y Laval, T. S. Orlova
Rok vydání:	2006
Předmět:	Charge ordering Curie–Weiss law Electron diffraction Ferromagnetism Condensed matter physics Chemistry Jahn–Teller effect Antiferromagnetism General Materials Science Atmospheric temperature range Condensed Matter Physics Manganite
Zdroj:	Journal of Physics: Condensed Matter. 18:6729-6748
ISSN:	1361-648X 0953-8984
DOI:	10.1088/0953-8984/18/29/013
Popis:	The relationships between incommensurability, charge ordering and magnetic and electric transport properties were studied in La0.33Ca0.67Mn1−yFeyO3 (0≤y≤0.06) polycrystalline samples. Incommensurability and charge ordering were directly observed by electron diffraction versus temperature and lattice imaging at low temperature in transmission electron microscopy. Both the charge ordering and the ferromagnetic Curie–Weiss temperature linearly decrease with increasing Fe concentration y. A mean field analysis yields an antiferromagnetic exchange J(Mn–Fe) = −22 K. The undoped samples showed predominantly a commensurate charge ordering superstructure with q-vector 1/3a* over the whole temperature range
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::11aeabeba755913395a0be1c3c91bd61 https://doi.org/10.1088/0953-8984/18/29/013 Zobrazit plný text záznamu