Hexagonal ferrite samples of La xBa 1-x Fe 12 O 19 (x≤0 2) have been prepared by a sol gel method. The composition ratios of the samples were confirmed by atomic absorption spectrometry and chemical analysis. The res...Hexagonal ferrite samples of La xBa 1-x Fe 12 O 19 (x≤0 2) have been prepared by a sol gel method. The composition ratios of the samples were confirmed by atomic absorption spectrometry and chemical analysis. The results of XRD, DTA, TGA and SEM showed that the samples have the same crystal structure as barium ferrite, with grain sizes being less than 1 μm.展开更多
Transport properties of LaFeO3 in the temperature range of 2 K 〈 T 〈 300 K have been explored for the first time using interaction potential developed by the author and found that our computed results on transport p...Transport properties of LaFeO3 in the temperature range of 2 K 〈 T 〈 300 K have been explored for the first time using interaction potential developed by the author and found that our computed results on transport properties follow the same trend as that of available experimental values. These are scientifically and technologically important materials with orthorhombic perovskite-like structure and space group Pbnm. Lanthanum ferrite, LaFeO3 is semiconducting and antiferrom agnetically ordered at zero. The thermodynamics of perovskite-type or related materials of potential use in, e.g., solid oxide fuel cells have been studied to a rather limited extent only.展开更多
文摘Hexagonal ferrite samples of La xBa 1-x Fe 12 O 19 (x≤0 2) have been prepared by a sol gel method. The composition ratios of the samples were confirmed by atomic absorption spectrometry and chemical analysis. The results of XRD, DTA, TGA and SEM showed that the samples have the same crystal structure as barium ferrite, with grain sizes being less than 1 μm.
文摘Transport properties of LaFeO3 in the temperature range of 2 K 〈 T 〈 300 K have been explored for the first time using interaction potential developed by the author and found that our computed results on transport properties follow the same trend as that of available experimental values. These are scientifically and technologically important materials with orthorhombic perovskite-like structure and space group Pbnm. Lanthanum ferrite, LaFeO3 is semiconducting and antiferrom agnetically ordered at zero. The thermodynamics of perovskite-type or related materials of potential use in, e.g., solid oxide fuel cells have been studied to a rather limited extent only.
