Critical behavior of La0.67-y (Sr, Ba, Ca)(0.33+y)Mn1-xSnxO3 (x=0.01, 0.02, y=0, 0.07) perovskites
| dc.contributor.author | Assaridis, H. | en |
| dc.contributor.author | Panagiotopoulos, I. | en |
| dc.contributor.author | Moukarika, A. | en |
| dc.contributor.author | Papaefthymiou, V. | en |
| dc.contributor.author | Bakas, T. | en |
| dc.date.accessioned | 2015-11-24T17:32:52Z | |
| dc.date.available | 2015-11-24T17:32:52Z | |
| dc.identifier.issn | 0304-3843 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/13790 | |
| dc.rights | Default Licence | - |
| dc.subject | mossbauer spectroscopy | en |
| dc.subject | critical exponents | en |
| dc.subject | manganese oxides | en |
| dc.subject | magnetic measurements | en |
| dc.subject | ferromagnetic manganites | en |
| dc.subject | doped manganites | en |
| dc.subject | phase-separation | en |
| dc.subject | transition | en |
| dc.title | Critical behavior of La0.67-y (Sr, Ba, Ca)(0.33+y)Mn1-xSnxO3 (x=0.01, 0.02, y=0, 0.07) perovskites | en |
| heal.abstract | The magnetic critical behavior of the manganese perovskite series La0.67-y (Sr; Ba; Ca) 0.33+y Mn1-xSnxO3 (x = 0.01, 0.02, y = 0, 0.07) is studied by means of dc magnetic measurements and Sn-119 Mossbauer spectroscopy. The structure can be described by a rhombohedral unit cell (space group R-3C) for the samples where the A-site is occupied by La and Sr or La and Ba ions and orthorhombic unit cell (space group Pnma) for the samples where the A-site is occupied by La and Ca ions. Arrott and scaling plots show that the samples, where the A-site is occupied by La and Sr or La and Ba ions, follow the behavior of a conventional second-order ferromagnetic transition. In contrast, the samples that contain La and Ca ions in the A-site show anomalous behavior around Curie point. Mossbauer measurements show two magnetic phases below T-c. One of them exhibits stronger exchange interactions with more rapid electron transfer between Mn3+/Mn4+, compared to the other. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.primary | DOI 10.1007/s10751-006-9447-6 | - |
| heal.identifier.secondary | <Go to ISI>://000243556400021 | - |
| heal.journalName | Hyperfine Interactions | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2006 | - |
| heal.publisher | Springer | en |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Μηχανικών Επιστήμης Υλικών | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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