Effect of Co substitution on the structural, electrical, and magnetic properties of Bi0.9La0.1FeO3 by sol-gel synthesis

被引：22

作者：

Ali, Ghulam ^{[1
]}

Siddiqi, Saadat A. ^{[1
,2
]}

Ramay, Shahid M. ^{[3
]}

Atiq, Shahid ^{[1
]}

Saleem, Murtaza ^{[1
]}

机构：

[1] Univ Punjab, Ctr Excellence Solid State Phys, Lahore 54590, Pakistan

[2] COMSATS Inst Informat Technol, Interdisciplinary Res Ctr Biomed Mat, Lahore 54590, Pakistan

[3] King Saud Univ, Dept Chem Engn, Coll Engn, Riyadh 11421, Saudi Arabia

来源：

INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2013年 / 20卷 / 02期

关键词：

multiferroics; cobalt; doping; microstructure; electric properties; magnetic properties; sol-gel process; BIFEO3; POLARIZATION;

D O I：

10.1007/s12613-013-0709-4

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Cobalt (Co)-doped Bi0.9La0.1FeO3 multiferroics were synthesized by a sol-gel method based on the autocombustion technique. As-synthesized powder was examined using various characterization techniques to explore the effect of Co substitution on the properties of Bi0.9La0.1FeO3. X-ray diffraction reveals that Co-doped Bi0.9La0.1FeO3 preserves the perovskite-type rhombohedral structure of BiFeO3, and the composition without Co preserves the original structure of the phase; however, a second-phase Bi2Fe4O9 has been identified in all other compositions. Surface morphological studies were performed by scanning electron microscopy. Temperature-dependent resistivity of the samples reveals the characteristic insulating behavior of the multiferroic material. The resistivity is found to decrease with the increase both in temperature and Co content. Room temperature frequency-dependent dielectric measurements were also reported. Magnetic measurements show the enhancement in magnetization with the increase in Co content.

引用

页码：166 / 171

页数：6

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