@inproceedings{ecc9e28be225484da97f473c789165aa,
title = "Investigation of structural and electrical properties of La0.7(Ba1-xCax)0.3MnO3 compounds by sol-gel method",
abstract = "In this paper, we explored structural and electrical properties of La0.7(Ba1-xCax)0.3MnO3 (x = 0; 0.03; and 0.05) compounds. The general structure of perovskite manganites is AMnO3 (A= trivalent rare earth with divalent ion-doped). Average A-site cation size, external pressure, and the variance of the cation size σ2 are one of many factors that affected to magneto-transport properties of manganites as reported by others. In this work we focus only on the electrical properties in La0.7Ba0.3MnO3 Ca-doped compound which may influence crystal structure resulting resistivity phenomena under magnetic field influence. All samples were synthesized by sol-gel method from which fine powders were obtained. The X-ray powder diffraction pattern of powder materials shows that all samples are fully crystalline with a rhombohedral structure. Rietveld refinement shows that the presence of calcium has changed some crystal structural parameters such lattice parameter, Mn-O bond length, and Mn-O-Mn angles. The electrical resistivity of all synthesized materials investigated by four point probe method using Cryogenic Magnet in the temperature range of 50-300 K under influence a magnetic field shows resistivity temperature dependent. In fact presence of calcium has reduced the resistivity. It might occure because it has made an enhancement in the mobility of hopping electrons. The magnetic external field causes the resistivity decreased for all samples because host spin align by delocalizing the charge carries so electron itinerant through the lattice suggested by other authors. Both calcium dopant concentration and the applied external magnetic field shows strong correlation in reduction of resistivity.",
author = "Suci Winarsih and R., {Budhy Kurniawan} and Azwar Manaf and Dwi Nanto and Agung Imaduddin and Hendrik and Saptari, {Sitti Ahmiatri}",
note = "Publisher Copyright: {\textcopyright} 2016 Author(s).; 2016 Conference on Fundamental and Applied Science for Advanced Technology, ConFAST 2016 ; Conference date: 25-01-2016 Through 26-01-2016",
year = "2016",
month = jun,
day = "17",
doi = "10.1063/1.4953929",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Winanda, {Rara Sandhy} and Qonitatul Hidayah and Yanto, {Iwan Tri Riyadi} and Nursyiva Irsalinda and Aji, {Oktira Roka} and Kusuma, {Damar Yoga} and Syarifah Inayati",
booktitle = "2016 Conference on Fundamental and Applied Science for Advanced Technology, ConFAST 2016",
address = "United States",
}