High frequency characteristics of (Ni
 75
 Fe
 2
 )
 
 x
 
 (ZnO)
 
 1−
 x
 
 granular thin films with tunable damping coefficient

Li, Wenchun; Zuo, Yu; Xiao-hong, Liu; Qing-Qing, Wei; Zhou, Xueyun; Yao, Dongsheng

doi:10.1088/1674-1056/24/4/047503

Cited by 3 publications

(2 citation statements)

References 22 publications

(19 reference statements)

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“…SMMs such as carbonyl iron, FeNi and FeSi have a natural resonance frequency up to GHz and can maintain a permeability that does not decrease with frequency. [17][18][19][20][21][22][23] Unfortunately, the permeability of traditional soft magnetic composites (SMCs) is very low (usually less than 10), which results in high core loss when used at high frequencies. Therefore, to fully unlock the potential of WBG semiconductors and meet the needs of the next-generation power electronics, SMMs must have high operating frequencies (over 100 MHz) and simultaneously have a permeability as high as possible.…”

Section: Introductionmentioning

confidence: 99%

High-frequency magnetic properties and core loss of carbonyl iron composites with easy plane-like structures*

Wang¹,

Guo²,

Qiao³

et al. 2021

Chinese Phys. B

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To fully release the potential of wide bandgap (WBG) semiconductors and achieve high energy density and efficiency, a carbonyl iron soft magnetic composite (SMC) with an easy plane-like structure is prepared. Due to this structure, the permeability of the composite increases by 3 times (from 7.5 to 21.5) at 100 MHz compared with to the spherical carbonyl iron SMC, and the permeability changes little at frequencies below 100 MHz. In addition, the natural resonance frequency of the composite shifts to higher frequencies at 1.7 GHz. The total core losses of the composites at 10, 20, and 30 mT are 80.0, 355.3, and 810.7 mW/cm3, respectively, at 500 kHz. Compared with the spherical carbonyl iron SMC, the core loss at 500 kHz is reduced by more than 60%. Therefore, this kind of soft magnetic composite with an easy plane-like structure is a good candidate for unlocking the potential of WBG semiconductors and developing the next-generation power electronics.

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Section: Introductionmentioning

confidence: 99%

High-frequency magnetic properties and core loss of carbonyl iron composites with easy plane-like structures*

Wang¹,

Guo²,

Qiao³

et al. 2021

Chinese Phys. B

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“…However, different-element doping enables ZnO to own many new functions, for example, transparent electrodes, flat-panel display, light-emitting diode, solar cell and surface acoustic wave device [1][2][3][4][5][6][7]. Effective element doping has a stable structure in ZnO semiconductor [8], so photoelectric properties of ZnO doping system have been a current research hotspot [9][10][11][12]. In experimental studies, studies on the photoelectric properties of Zr-doped ZnO are widespread, for example, Selvam et al [13] adopted low-cost coprecipitation method to study the influences of Zr-doped ZnO system structure and photocatalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Effect of Zr doping on the electrical and optical properties of ZnO

Hou

Zhao

2016

Chemical Physics Letters

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Effects of Cu doped ZnO diluted magnetic semiconductors on magnetic and electrical performance from simulation and calculation

Hou¹,

Xu²,

Wu³

et al. 2015

Acta Phys. Sin.

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At present, the effects on the magnetic and electrical properties of Cu heavily doped ZnO with the mole amount of Cu being in a range of 0.02778-0.16667 are rarely studied by first-principles. Therefore two models for Zn1-xCuxO supercells (x=0.02778, 0.03125) are set up to calculate the band structures and density of states by using the plane-wave ultrasoft pseudopotential based on the spin-polarized density functional theory. The calculation results indicate that the doped systems are degenerate semiconductors, and they are semimetal diluted magnetic semiconductors. As the doping amount of Cu increases, the relative concentration of free holes increases, the effective mass of holes decreases, the electron mobility decreases and the electronic conductivity increases. These results are validated again by the analysis of ionization energy and Bohr radius, and they are consistent with the experimental data. As the doping amount of single-Cu increases from 0.02778 to 0.0625, the volume of doping system decreases, the total energy increases, the stability decreases, the formation energy increases and doping is more difficult. As the same concentration and the different doping modes for double-Cu doped, the magnetic moment of doping system first increases and then decreases with the increasing of spacing of Cu-Cu; while the bonds of nearest Cu–O–Cu lie along the a-axis or b-axis, the magnetic moment of doping system disappears; while the bonds of nearest Cu–O–Cu lie along the c-axis, the Curie temperature reaches a temperature above room temperature. As the doping amount of double-Cu increases from 0.0625 to 0.16667, the total magnetic moment of doping system first increases and then decreases, while the bonds of nearest Cu–O–Cu lie along the c-axis. The calculation results are consistent with the experimental data.

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High frequency characteristics of (Ni ₇₅ Fe ₂ ) _x (ZnO) _{1−
x} granular thin films with tunable damping coefficient

Cited by 3 publications

References 22 publications

High-frequency magnetic properties and core loss of carbonyl iron composites with easy plane-like structures*

High-frequency magnetic properties and core loss of carbonyl iron composites with easy plane-like structures*

Effect of Zr doping on the electrical and optical properties of ZnO

Effects of Cu doped ZnO diluted magnetic semiconductors on magnetic and electrical performance from simulation and calculation

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High frequency characteristics of (Ni 75 Fe 2 ) x (ZnO) 1− x granular thin films with tunable damping coefficient

Cited by 3 publications

References 22 publications

High-frequency magnetic properties and core loss of carbonyl iron composites with easy plane-like structures*

High-frequency magnetic properties and core loss of carbonyl iron composites with easy plane-like structures*

Effect of Zr doping on the electrical and optical properties of ZnO

Effects of Cu doped ZnO diluted magnetic semiconductors on magnetic and electrical performance from simulation and calculation

Contact Info

Product

Resources

About

High frequency characteristics of (Ni ₇₅ Fe ₂ ) _x (ZnO) _{1−
x} granular thin films with tunable damping coefficient