Investigation of Magnetic and Microwave Absorption Properties of Ba{sub (1−2x)}La{sub x}Na{sub x}Fe{sub 10}CoTiO{sub 19} Hexaferrites in 18.0–26.5 GHz Band

Journal Article · Mon Jul 15 04:00:00 EDT 2019 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-018-4920-4· OSTI ID:22921196

Arora, Amit

A series of Ba{sub (1−2x)}La{sub x}Na{sub x}Fe{sub 10}CoTiO{sub 19} hexaferrite samples with x = 0.00–0.25 (step size 0.05) were prepared by using conventional solid-state reaction technique. The magnetic properties of the hexaferrites have been investigated at room temperature by employing a vibrating sample magnetometer. There is an overall decrease in saturation magnetization from 70.64 to 57.83 emu/g with an increase in doping concentration from x = 0.00–0.25. The microwave measurements were done utilizing vector network analyzer in the k-band (18.0–26.5 GHz) frequency range. The electromagnetic measurements revealed that the gross tangent loss is maximum for x = 0.10 sample. The microwave absorption measurements show that sample x = 0.10 with 1.4 mm thickness exhibits a reflection loss of − 26.59 dB (99.78% signal absorption) and 7.65 GHz bandwidth. Thus, it is considered for thin single-layer broadband microwave absorber applications in 18.0–26.5 GHz frequency range.

• OSTI ID: 22921196
• Journal Information: Journal of Superconductivity and Novel Magnetism, Journal Name: Journal of Superconductivity and Novel Magnetism Journal Issue: 7 Vol. 32; ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ABSORPTION
BARIUM COMPOUNDS
COBALT COMPOUNDS
FERRITES
GHZ RANGE
LANTHANUM COMPOUNDS
LAYERS
MAGNETIC PROPERTIES
MAGNETIZATION
MICROWAVE RADIATION
PERMEABILITY
REFLECTION
SODIUM COMPOUNDS
VIBRATING SAMPLE MAGNETOMETERS