Fine grained Mn–Zn ferrite for high frequency driving

1998 ◽  
Vol 83 (11) ◽  
pp. 6861-6863 ◽  
Author(s):  
K. Takadate ◽  
Y. Yamamoto ◽  
A. Makino ◽  
T. Yamaguchi ◽  
I. Sasada
Keyword(s):  
High Frequency ◽  
Fine Grained ◽  
Zn Ferrite

scholarly journals High-frequency sea-level changes recorded in deep-water carbonates of the Upper Cretaceous Dol Formation (island of Brač, Croatia)

2010 ◽  
Vol 61 (1) ◽  
pp. 29-38
Author(s):  
Damir Bucković ◽  
Maja Martinuš ◽  
Duje Kukoč ◽  
Blanka Tešović ◽  
Ivan Gušić
Keyword(s):  
Sea Level ◽  
Deep Water ◽  
High Frequency ◽  
Upper Cretaceous ◽  
Distal Part ◽  
Preferential Orientation ◽  
Sea Level Changes ◽  
Carbonate Production ◽  
Fine Grained ◽  
Platform Margin

High-frequency sea-level changes recorded in deep-water carbonates of the Upper Cretaceous Dol Formation (island of Brač, Croatia)The upper part of the Middle Coniacian/Santonian-Middle Campanian deep-water Dol Formation of the island of Brač is composed of countless fine-grained allodapic intercalations deposited in an intraplatform trough. Within the studied section 13 beds can be distinguished, each defined by its lower part built up of dark grey limestone with abundance of branched, horizontally to subhorizontally oriented burrows, and the upper part, in which the light grey to white limestone contains larger burrows, rarely branched, showing no preferential orientation. The lower, dark grey, intensively bioturbated levels are interpreted as intervals formed during high-frequency sea-level highstands, while the upper, light grey-to-white levels are interpreted as intervals formed during the high-frequency sea-level lowstands. Cyclic alternation of these two intervals within the fine-grained allodapic beds is interpreted as the interaction between the amount of carbonate production on the platform margin and the periodicity and intensity of shedding and deposition in the distal part of toe-of-slope environment, which is governed by Milankovitch-band high frequency sea-level changes.

A novel transmission-line type high frequency transformer using a fine-grain Mn-Zn ferrite [for ballasts]

1999 ◽  
Vol 35 (5) ◽  
pp. 3538-3540 ◽  
Author(s):  
T. Inoue ◽  
M. Furukawa ◽  
T. Sato ◽  
K. Yamasawa ◽  
T. Takahashi ◽  
...  
Keyword(s):  
Transmission Line ◽  
High Frequency ◽  
Fine Grain ◽  
High Frequency Transformer ◽  
Zn Ferrite ◽  
Line Type

scholarly journals High Frequency Permeability of Mn-Zn Ferrite and its Composite Materials

1997 ◽  
Vol 07 (C1) ◽  
pp. C1-557-C1-558 ◽  
Author(s):  
T. Tsutaoka ◽  
T. Kasagi ◽  
T. Nakamura ◽  
K. Hatakeyama
Keyword(s):  
Composite Materials ◽  
High Frequency ◽  
Zn Ferrite

scholarly journals Ni-Cu-Zn Ferrite Research: A Brief Review

2013 ◽  
Vol 5 (2) ◽  
pp. 215-234 ◽  
Author(s):  
M. F. Huq ◽  
D. K. Saha ◽  
R. Ahmed ◽  
Z. H. Mahmood
Keyword(s):  
Rare Earth ◽  
High Frequency ◽  
Sintering Temperature ◽  
Electromagnetic Properties ◽  
Sintering Aids ◽  
Cu Content ◽  
Zn Concentration ◽  
Zn Ferrite ◽  
The Individual ◽  
Better Than

The temperature at which the ferrite is sintered critically depends on the chemical composition. The electromagnetic properties are dependent on the densification and microstructure. Substitutions and addition of sintering aids is an attractive approach to enhance the electromagnetic properties. Various compositions in the system Ni1-x-yCuxZnyFe2O4 were investigated. Cu is used to decrease the sintering temperature. However, Cu decreases the resistivity, which is not desirable for its high frequency applications. So, optimization of Cu content is necessary. Different ranges of electromagnetic properties have been reported with various Zn concentrations. Optimization of Zn concentration with respect to Ni and Cu is essential to achieve desirable electromagnetic properties. Influence of rare earths has also been reported. The investigations showed an improved densification in Ni-Zn and increased permeability in Cu-Zn ferrite by Sm substitution. La substitutions showed an improved resistivity in Ni-Zn ferrites. Similarly, these substitutions may improve the electromagnetic properties in Ni-Cu-Zn ferrites. V2O5, MoO3 and Bi2O3 were reported to be the most widely used sintering additives. Bi2O3-WO3 and V2O5-MoO3 mixed additives were better than the individual additives in Ni-Cu-Zn ferrite, respectively. Further research is needed on the mixed sintering additivesKeywords: Additives; Ferrite preparation; Ni-Cu-Zn ferrite; Rare Earth; Sintering aids.© 2013 JSR Publications. ISSN: 2070-0237 (Print); 2070-0245 (Online). All rights reserved.doi: http://dx.doi.org/10.3329/jsr.v5i2.12434 J. Sci. Res. 5 (2), 215-233 (2013)

Soft magnetic and high-frequency properties of Ni–Zn ferrite film with FeMn underlayer

2012 ◽  
Vol 520 (18) ◽  
pp. 5977-5980 ◽  
Author(s):  
Dangwei Guo ◽  
Yuancai Yang ◽  
Jingyi Zhu ◽  
Changjun Jiang ◽  
Xiaolong Fan ◽  
...  
Keyword(s):  
High Frequency ◽  
Ferrite Film ◽  
Soft Magnetic ◽  
Zn Ferrite ◽  
Frequency Properties

Expression of High Frequency-Losses in Mn-Zn Ferrite

1993 ◽  
Vol 8 (11) ◽  
pp. 795-800 ◽  
Author(s):  
T. Fujiwara ◽  
R. Tahara
Keyword(s):  
High Frequency ◽  
Zn Ferrite
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