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Title: Investigation of structural and electrical properties of La{sub 0.7}(Ba{sub 1-x}Ca{sub x}){sub 0.3}MnO{sub 3} compounds by sol-gel method

Abstract

In this paper, we explored structural and electrical properties of La{sub 0.7}(Ba{sub 1-x}Ca{sub x}){sub 0.3}MnO{sub 3} (x = 0; 0.03; and 0.05) compounds. The general structure of perovskite manganites is AMnO{sub 3} (A= trivalent rare earth with divalent ion-doped). Average A-site cation size, external pressure, and the variance of the cation size σ{sup 2} 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 La{sub 0.7}Ba{sub 0.3}MnO{sub 3} 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 itmore » 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.« less

Authors:
; ;  [1];  [2]; ;  [3];  [4]
  1. Physics Department, Universitas Indonesia, Depok 16424 (Indonesia)
  2. Department of Physics Education, Universitas Islam Negeri Syarif Hidayatullah, Jakarta 15412 (Indonesia)
  3. Metallurgical Research Center, Lembaga Ilmu Pengetahuan Indonesia, Puspiptek-Serpong 15314 (Indonesia)
  4. Faculty of Science and Technology, Universitas Islam Negeri Syarif Hidayatullah, Jakarta 15412 (Indonesia)
Publication Date:
OSTI Identifier:
22609103
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1746; Journal Issue: 1; Conference: ICPR 2016: International conference on physics and applied physics research, Yogyakarta (Indonesia), 25-26 Jan 2016, ICIBio 2016: International conference on industrial biology, Yogyakarta (Indonesia), 25-26 Jan 2016, ICIAMath 2016: International conference on information system and applied mathematics, Yogyakarta (Indonesia), 25-26 Jan 2016; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; BARIUM COMPOUNDS; CALCIUM COMPOUNDS; CONCENTRATION RATIO; CRYSTALS; DOPED MATERIALS; ELECTRIC CONDUCTIVITY; LANTHANUM COMPOUNDS; LATTICE PARAMETERS; MAGNETIC FIELDS; MAGNETS; MANGANATES; PEROVSKITE; POWDERS; RARE EARTHS; SOL-GEL PROCESS; TEMPERATURE DEPENDENCE; TRIGONAL LATTICES; X RADIATION; X-RAY DIFFRACTION

Citation Formats

Winarsih, Suci, Kurniawan, Budhy, E-mail: bkuru07@gmail.com, Manaf, Azwar, Nanto, Dwi, Imaduddin, Agung, Hendrik, and Saptari, Sitti Ahmiatri. Investigation of structural and electrical properties of La{sub 0.7}(Ba{sub 1-x}Ca{sub x}){sub 0.3}MnO{sub 3} compounds by sol-gel method. United States: N. p., 2016. Web. doi:10.1063/1.4953929.
Winarsih, Suci, Kurniawan, Budhy, E-mail: bkuru07@gmail.com, Manaf, Azwar, Nanto, Dwi, Imaduddin, Agung, Hendrik, & Saptari, Sitti Ahmiatri. Investigation of structural and electrical properties of La{sub 0.7}(Ba{sub 1-x}Ca{sub x}){sub 0.3}MnO{sub 3} compounds by sol-gel method. United States. doi:10.1063/1.4953929.
Winarsih, Suci, Kurniawan, Budhy, E-mail: bkuru07@gmail.com, Manaf, Azwar, Nanto, Dwi, Imaduddin, Agung, Hendrik, and Saptari, Sitti Ahmiatri. 2016. "Investigation of structural and electrical properties of La{sub 0.7}(Ba{sub 1-x}Ca{sub x}){sub 0.3}MnO{sub 3} compounds by sol-gel method". United States. doi:10.1063/1.4953929.
@article{osti_22609103,
title = {Investigation of structural and electrical properties of La{sub 0.7}(Ba{sub 1-x}Ca{sub x}){sub 0.3}MnO{sub 3} compounds by sol-gel method},
author = {Winarsih, Suci and Kurniawan, Budhy, E-mail: bkuru07@gmail.com and Manaf, Azwar and Nanto, Dwi and Imaduddin, Agung and Hendrik and Saptari, Sitti Ahmiatri},
abstractNote = {In this paper, we explored structural and electrical properties of La{sub 0.7}(Ba{sub 1-x}Ca{sub x}){sub 0.3}MnO{sub 3} (x = 0; 0.03; and 0.05) compounds. The general structure of perovskite manganites is AMnO{sub 3} (A= trivalent rare earth with divalent ion-doped). Average A-site cation size, external pressure, and the variance of the cation size σ{sup 2} 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 La{sub 0.7}Ba{sub 0.3}MnO{sub 3} 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.},
doi = {10.1063/1.4953929},
journal = {AIP Conference Proceedings},
number = 1,
volume = 1746,
place = {United States},
year = 2016,
month = 6
}
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