Synthesis of calcium doped lanthanum manganite by mechanosynthesis

Bolarín, A. M.; Sánchez, F.; Palomares, S.; Aguilar, Jonathan; Torres‐Villaseñor, G.

doi:10.1016/j.jallcom.2006.07.061

Cited by 16 publications

(13 citation statements)

References 29 publications

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“…Mechanical activation (mechanochemical processing) using a high-energy milling process has been widely applied in powder processing, due to its ability to produce materials with improved physical properties [30][31][32][33]. The mechanical energy generated by high-energy ball milling serves to activate chemical reactions in the material.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors

Aleksić

Nikolić

Luković

et al. 2013

Materials Science and Engineering: B

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors

Aleksić

Nikolić

Luković

et al. 2013

Materials Science and Engineering: B

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“…This LSM system has been synthesized by several techniques [11][12][13][14][15][16][17][18][19][20][21][22][23]; however there are very few works [24][25][26][27][28][29] The aim of this study is to synthesize by a very simple method (one hour using a planetary ball milling equipment at room temperature) eight phases belonging to the system La 1-x Sr x MnO 3±δ (x=0, 0.25, 0.5, 0.75, 0.80, 085, 0.90, and 1) and analyze the structure before and after annealing at 1100º C in static air. The evaluation of how the x value affects the final structure and symmetry, and how far-in terms of the x value-the solid solution is kept were considered.…”

Section: Introductionmentioning

confidence: 99%

Room temperature mechanosynthesis of the La1−Sr MnO3± (0≤x≤1) system and microstructural study

Sayagués

Córdoba

Gotor

2012

Journal of Solid State Chemistry

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Monophase nanocrystalline powders belonging to the La 1-x Sr x MnO 3±δ system (0≤x≤1) with a perovskite structure have been obtained by mechanochemistry synthesis using a planetary ball milling equipment from La 2 O 3 , SrO, and Mn 2 O 3 mixtures. The solid state reaction was complete after one hour of milling treatment. For all the compositional range, the diffraction domain was very small and the structure appeared as a pseudo cubic perovskite. After annealing at 1100°C under static air, the symmetry evolution due to the La substitution by Sr was analyzed by x-ray and electron diffraction. Samples with x = 0, 0.25, 0.5, and 0.75 were assigned to R-3c space group (167) in the rhombohedral system and perovskite structure. However, the symmetry of the last term of the system (x=1), SrMnO 3±δ sample, changed to P6 3 /mmc space group (194) in the hexagonal system. The terms with x = 0.8, 0.85, and 0.9 presented mainly rhombohedral symmetry.

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“…The simplest method of doping or alloying the material is mechanochemical processing [39,40]. This process is usually employed for the synthesis of advanced ceramics [41][42][43][44][45] and in the preparation of catalytic materials [46][47][48].…”

Section: Introductionmentioning

confidence: 99%

The mechanochemical stability of hydrogen titanate nanostructures

Plodinec¹,

Friščić²,

Iveković³

et al. 2010

Journal of Alloys and Compounds

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The structural stability of some nanostructured titanates was investigated in terms of their subsequent processing and possible applications. With the aim to investigate their mechanochemical stability, we applied high-energy ball milling and studied the resulting induced phase transitions. Hydrogen titanates with two different morphologies, microcrystals and nanotubes, were taken into consideration. The phase-transition sequence was studied by Raman spectroscopy and X-ray powder diffraction, while the morphology and crystal structure, on the nanoscale, were analyzed by high-resolution transmission electron microscopy. During the mechanochemical treatment of both morphologies, the phase transitions from hydrogen titanate to TiO2 anatase and subsequently to TiO2 rutile were observed. In the case of hydrogen trititanate crystals, the phase transition to anatase starts after a longer milling time than in the case of the titanate nanotubes, which is explained by the larger particle size of the crystalline powder. However, the phase transition from anatase to rutile occurred more quickly in the crystalline powder than in the case of the nanotubes.

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Synthesis of calcium doped lanthanum manganite by mechanosynthesis

Cited by 16 publications

References 29 publications

Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors

Preparation and characterization of Cu and Zn modified nickel manganite NTC powders and thick film thermistors

Room temperature mechanosynthesis of the La1−Sr MnO3± (0≤x≤1) system and microstructural study

The mechanochemical stability of hydrogen titanate nanostructures

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