Fabrication of multilayer chip inductors using Ni–Cu–Zn ferrites

Krishnaveni, T.; Kanth, B. Rajini; Raju, V. Seetha Rama; Murthy, S. R.

doi:10.1016/j.jallcom.2005.07.029

Cited by 81 publications

(25 citation statements)

References 11 publications

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“…The resonance peak around 1 GHz can be explained as when the hopping frequency of electrons is equal to the applied field frequency, maximum electrical energy is transferred to the oscillating ions and power loss shoots up, thereby resulting in resonance. The measured results of complex permeability and complex permittivity in this work are in good agreement with the published reports measured with impedance analyzers [27][28][29].…”

Section: F Airgap Correctionsupporting

confidence: 91%

Design of coaxial aircell fixture for the measurement of electromagnetic properties

Raju¹

2017

J. Microw. Optoelectron. Electromagn. Appl.

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Abstract-Coaxial aircells are designed and fabricated to measure the electromagnetic properties of ferrite materials in the frequency range from 1 MHz to 3.6 GHz. These Sparameters are actually measured connecting the aircell to a vector network analyzer (VNA).The electromagnetic properties such as complex permittivity and complex permeability are extracted using Nicolson-Ross-Weir (NRW) method and also suitable air-gap corrections are made. To optimize the measured result and to estimate the error, the aircells are characterized in terms of their phase constant and resistivity of the aircell conductor. The measurements clearly showed that the electrical length is longer than the mechanical length of the aircell at all frequencies. The arithmetic mean of the resistivity of aircell which is of 7mm line size and 60mm length is about 66 nΩm. This paper presents a simple method by which the phase constant and resistivity of the aircell can be determined accurately. This is done with the transmission measurements made using a VNA.

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Section: F Airgap Correctionsupporting

confidence: 91%

Design of coaxial aircell fixture for the measurement of electromagnetic properties

Raju¹

2017

J. Microw. Optoelectron. Electromagn. Appl.

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“…Nickel copper zinc ferrites with high permeability and a high Curie temperature have been widely studied for practical and microwave applications [3,4]. Ferrite chip inductors are one of the important components for the latest electronics products such as cellular phones, video cameras, notebook computers, hard and floppy drives [5], etc. The elastic moduli represent the mechanical strength and thermal shock resistance of sample.…”

Section: +mentioning

confidence: 99%

Variation in Elastic Properties of Holmium Substituted Nickel Copper Zinc Ferrites

Shinde¹,

Dhale²,

Lohar³

2017

Asian J. Chem.

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Nickel copper zinc ferrites with composition of Ni0.2Cu0.2Zn0.6Fe2-xHoxO4 (x=0.0 to 0.1 in steps of 0.02) synthesized by the sol-gel autocombustion method. Sintering temperature of precursors determined using TGA-DTA. XRD patterns indicate that all samples have single phase cubic spinel structure. The IR spectra show two major absorption bands. The microstructures of the prepared samples were studied by SEM and TEM. Elastic moduli and Debye temperature were determined using IR data and XRD data of spinel ferrite samples. The values of Debye temperature, Young's modulus (E), bulk modulus (K) and modulus of rigidity (G) and stiffness constant increased with holmium substitution.

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“…8,9 Recently due to better magnetic properties, controlled shape of nanocrystalline Ni-Cu-Zn ferrites have been the dominant materials for MLIC at high frequency and low sintering temperature. [10][11][12][13][14][15][16] These oxides can be sintered at relatively low temperatures with a wide range of compositions. Recently, several methods were used to synthesize highly crystalline and uniformly sized magnetic nanoparticles of Ni-Cu-Zn ferrite.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Chromium Doped Ni-Cu-Zn Nano Ferrites

Shinde¹,

Dhale

Suryavanshi

et al. 2017

ACSi

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Chromium doped Ni-Cu-Zn nano ferrites with chemical formula Ni 0.2 Cu 0.2 Zn 0.6 Fe 2-x Cr x O 4 (x = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0) were prepared by using sol-gel auto combustion method. The prepared precursors of Chromium substituted Ni-CuZn ferrites were sintered at 500 °C for 4h. Compositional stoichiometry were confirmed from EDAX patterns. The XRD data revealed that the all samples possess a single phase cubic spinel structure. The Lattice constant, X-ray density, hopping lengths and crystallite size determined from XRD data decreases with increase in Cr 3+ concentration. The IR spectra show two major absorption bands, high frequency band ν 1 ≈ 600 cm -1 and low frequency band ν 2 ≈ 450 cm -1 attributed to the stretching vibration of tetrahedral and octahedral sites respectively. The surface morphology of the prepared samples was studied by Scanning Electron Microscopy and Transmission Electron Morphology.

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Fabrication of multilayer chip inductors using Ni–Cu–Zn ferrites

Cited by 81 publications

References 11 publications

Design of coaxial aircell fixture for the measurement of electromagnetic properties

Design of coaxial aircell fixture for the measurement of electromagnetic properties

Variation in Elastic Properties of Holmium Substituted Nickel Copper Zinc Ferrites

Preparation and Characterization of Chromium Doped Ni-Cu-Zn Nano Ferrites

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