Correlation between structural, magnetic and electrical transport properties of barium vacancies in the La0.67Ba0.33− x □ x MnO3 (x =0, 0.05, and 0.1) manganite. - Oumezzine, Marwène; Kallel, Sami; Peña, Octavio; Kallel, Nabil; Guizouarn, Thierry; Gouttefangeas, Francis; Oumezzine, Mohamed (Journal of Alloys & Compounds, 2014)