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Title: Monitoring structural variation on Gd ratio of La modified bismuth ferrite ceramics with enhanced magnetization

Journal Article · · Journal of Alloys and Compounds
ORCiD logo [1];  [2];  [3];  [3]
  1. Univ. of Puerto Rico, San Juan, PR (United States); Kahramanmaras Sutcu Imam Univ., Kahramanmaras (Turkey)
  2. Kahramanmaras Sutcu Imam Univ., Kahramanmaras (Turkey)
  3. Univ. of Puerto Rico, San Juan, PR (United States)

Critical structural variation and dielectric properties were investigated in Lanthanum and Gadolinium co-substituted bismuth ferrite (Bi0.9La0.1Fe1-xGdxO3 (x = 0.01, 0.03, 0.05, 0.07, 0.1, and 0.15). Conventional solid state reaction technique was used to synthesize ceramic samples. To investigate the influence of co-substitution on the phase formation and crystal structure, X-ray diffraction method (XRD), Scanning electron microscopy (SEM) and Raman spectroscopy were utilized. Probing the structural properties by changing Gd ratio was carried out to ensure single phase of rhombohedral R3c structure. Hence, the exploration of dielectric properties of single phase modified BiFeO3 (BFO) ceramic was executed by room temperature capacitance and loss tangent measurements. It was found that by substitution of 10 mol% La for Bi and up to 5 mol% Gd for Bi, perovskite structure of rhombohedral symmetry and R3c space group were formed. This possessed enhanced magnetization and reduced dielectric loss compared to pure BFO.

Research Organization:
Univ. of Puerto Rico, San Juan, PR (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-08ER46526
OSTI ID:
1800581
Alternate ID(s):
OSTI ID: 1702831
Journal Information:
Journal of Alloys and Compounds, Vol. 819; ISSN 0925-8388
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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