Magnetic properties of lithium zinc ferrites synthesized by microwave sintered method

Journal Article · Sun May 15 04:00:00 EDT 2016 · AIP Advances

DOI:https://doi.org/10.1063/1.4946899· OSTI ID:22611746

Yang, Qinghui; Zhang, Huaiwu; Wen, Qiye; Liu, Yingli; Yang, Xuwen ^[1]

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1. State Key Laboratory of Electronic Thin Film and Integrated Devices, University of Electronic Science and Technology of China, Chendu 610054, Sichuan (China)

In this paper, a series of polycrystalline ferrite samples were prepared with the composition of Zn{sub 0.1}Li{sub 0.525-x}Ti{sub 0.15}Mg{sub x}Fe{sub 2.225-0.5x}O{sub 4} (LiZn) (x=0, 0.05, 0.10, 0.15 and 0.20) using both microwave sintering (MS) and conventional sintering (CS) technologies, respectively. The sintering time and temperature were 22 hours and 1000°C for the CS process, and 2 hours and 880°C for the MS process. Experiments showed that the MS treated LiZn ferrites exhibited more excellent magnetic properties and denser, more uniform micro-structures comparing with the ones treated by CS method. For the LiZn ferrite (x=0.1) sintered at 880°C using MS, the saturation magnetic induction (Bs) is 242.3 mT, the coercive force (Hc) is 135 A/m, the square ratio (Br/Bs) is 0.87 and the ferromagnetic resonance line-width (Δ H) is 143.2 Oe. These results represented very good properties for an X-band phase shifter material and indicated that the MS method is a potentially important technique for fabricating low temperature co-fired ceramics (LTCC).

• OSTI ID: 22611746
• Journal Information: AIP Advances, Journal Name: AIP Advances Journal Issue: 5 Vol. 6; ISSN AAIDBI; ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CERAMICS
COERCIVE FORCE
COMPARATIVE EVALUATIONS
FERRITES
FERROMAGNETIC RESONANCE
INDUCTION
LITHIUM COMPOUNDS
MAGNETIC PROPERTIES
MICROSTRUCTURE
MICROWAVE RADIATION
PHASE SHIFT
POLYCRYSTALS
SATURATION
SINTERING
ZINC COMPOUNDS