نتایج جستجو برای: hexagonal ferrites

تعداد نتایج: 14976  

2017
A. Isalgué X. Obradors J. Tejada

Calculations for the magnetic dipolar contribution to the magnetic anisotropy of BaFeizOie and LaFeiiZnOie M-type and BaFerMn2Oil A-type hexagonal ferrites have been made. Our calculations take into account all the magnetic moments existing within a sphere with a radius of 118 1, from which good eonvergenee is reached. The results for there ferrite# suggest that the strong magnetic enisotropy i...

Journal: :international journal of nano dimension 0
s. abedini khorrami department of chemistry, azad university, north tehran branch, tehran, iran. r. islampour department of chemistry, azad university, north tehran branch, tehran, iran. h. bakhtiari department of chemistry, azad university, north tehran branch, tehran, iran. q. sadr manuchehri naeini department of chemistry, azad university, north tehran branch, tehran, iran.

nanocrystalline particles of barium hexaferrite has been prepared by the sol–gel auto- combustion method using iron and barium nitrate with a ba:fe molar ratio of 1:10. the effect of fuel such as citric acid and aspartic acid was investigated on the structure and magnetic properties of nanoparticles. the results revealed that the formation of barium hexaferritefine particles is influenced by mo...

2017
Alexander Pasko Frédéric Mazaleyrat Martino Lobue Vincent Loyau Vittorio Basso Michaela Küpferling Carlo Sasso Lotfi Bessais A Pasko F Mazaleyrat M LoBue V Loyau V Basso M Küpferling L Bessais

Numerous applications of hexagonal ferrites are related to their easy axis or easy plane magnetocrystalline anisotropy configurations. Certain W-type ferrites undergo spin reorientation transitions (SRT) between different anisotropy states on magnetic field or temperature variation. The transition point can be tuned by modifying the chemical composition, which suggests a potential application o...

2017
G. Litsardakis

The dipolar energy contribution to the anisotropy of M, Wand Y-type hexagonal fenites is examined. The geometrical coeff~cients kij are given, so that a calculation for any hexaferrite with the same structure can be effected. Differences in the results of previous works are explained as due to a simplifying assumption, the validity of which is restricted. The ambiguity regarding dipolar energy ...

2014
J. TÖPFER H. BARTSCH

We have studied the integration of Ni-Cu-Zn ferrite spinels as well as substituted hexagonal Co2Y-and M-type ferrites into LTCC (Low Temperature Ceramic Co-firing) modules. The cofiring behavior and the magnetic properties of these materials were investigated and evaluated for multilayer applications. Ni-Cu-Zn ferrites exhibit permeabilities of μ = 300 – 500 for operating frequencies in the MHz...

2013
Frederick L. Wentworth

Theoretical estimates of phase shifter performance as a function of material parameters are presented by examining the results obtained from the small perturbation model used by Button and Lax and from the fully ierrite loaded, parallel plane waveguide model used by Suhl «And Walker. The extension of Suhi's theory on nonlinear effects at high power by Fletcher and Silence is applied to relate t...

Journal: :Transactions of the Japan Institute of Metals 1983

Journal: :Applied Physics Letters 2023

The suppression of ferroelectricity in ultrathin films improper ferroelectric hexagonal ferrites or manganites has been attributed to the effect interfacial clamping, however, quantitative understanding and related phenomenological model are still lacking. In this work, we report paraelectric-to-ferroelectric phase transition epitaxial h-ScFeO3 with different thickness through in-situ reflectio...

Journal: :Magnetochemistry 2022

The solid-state reaction method is used to synthesize W-type Sr hexagonal ferrites Sr0.8Pr0.2(Zn1.0−xCox)2Fe16O27 (x = 0.00, 0.15, 0.30, 0.45, 0.60, 0.75). results of XRD for the ferrites, when Co content (x) 0.00 ≤ x 0.75, exhibit that they are in single hexaferrite phase. As shown by morphological analysis, particles hexagonal-shaped platelets. saturation magnetization (Ms) and magneton numbe...

Journal: :Journal of Electrical Engineering 2011

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید