Enhanced low-field magnetoresistance in La0.7Ca0.3MnO3+x(ZnO) composites

Intrinsic and extrinsic transport properties of Pr0.67Ba0.33MnO3:Ag2O composites

“…The MR behaviour below the peak is constant in a large temperature window which is good from the application point of view. It is also worthwhile to note that intrinsic MR has increased near the I-M transition temperature and the Ag 2 O addition has not shifted the peak of I-M towards low temperatures as is generally observed in the case of insulating oxides/manganite composites [19][20][21][22]. Thus, enhancement of peak MR in a very narrow temperature window (though the temperature is lower than the room temperature) and the constant value of MR below the MR peak are the salient features of these particular composites systems.…”

Effect of Sintering Temperature on Structural and Electrical Transport Properties of (La_0.7Ca_0.3MnO₃)_0.97/(ZnO)_0.03 Composite

“…It could be more useful for practical application. [19][20][21][22] and La 0.7 Ca 0.3 MnO 3 /ZnO [23] etc. However, low-field magnetoresistance property is also affected by several factors, sintering temperature, impurity, complicated band structure, electron-electron, electron-magnon scattering, etc.…”

Broad temperature range low field magnetoresistance in La0.7Ca0.3MnO3:nano-ZnO composites

“…and even other manganite (LaMnO 3 , etc.) have recently been explored and the results have been encouraging [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Generally, composites are prepared under high temperature to obtain higher density, which leads to a new problem associated with the interfacial phase.…”

“…ZnO, which is a wide band gap semiconductor exhibiting variety of nano structures and defect-induced magnetism, has re-emerged as one of the most important and intriguing materials [21]. Although, there are several reports on manganite-ZnO composites [12][13][14], however manganite-nano-ZnO composites have not been investigated so far. Therefore, in the present study we report the preparation, structure and improved low field magnetotransport properties in broad temperature range of La 0.7 Ca 0.3 MnO 3 :nano-ZnO composites.…”