JPS59156920A - Magnetic oxide material - Google Patents

Abstract

PURPOSE:To obtain a magnetic oxide material having high magnetic permeability, causing only a small loss, and suitable for use as the material of the iron core of a converter for communications equipment by blending ferric oxide, manganese oxide and zinc oxide as principal components with specified metallic oxides. CONSTITUTION:This magnetic oxide material is obtd. by blending 50-56mol% Fe2O3 (A), 22-39mol% MnO (B) and 8-25mol% ZnO (C) as principal components with 0.003-0.1wt% CaO (D) and 0.003-0.05wt% Bi2O3 (E) as secondary components.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an oxide magnetic material having high initial permeability and low loss characteristics suitable for use as a transformer core for communication equipment.

2. Description of the Related Art In recent years, miniaturization of d-sensor devices has progressed, and in response there has been a demand for miniaturization of electronic components used in electronic devices. In response to this demand, the present inventor engaged in the development of a high magnetic permeability and low loss inductance element, and came up with the present invention.

In addition to the above, the present invention provides an oxide magnetic material having high magnetic permeability and low loss characteristics.

That is, ferric oxide (FeyOg), manganese oxide (M
The main component is zinc oxide (ZnO), and its oxidizing power includes 0.003 to 0.1% by weight of Cab, 0.005 to 0.05% by weight of BizOi, and vanadium oxide ( v20su 0.003~0.1 weight,
By adding 1% of the compound, an oxide magnetic material with high magnetic permeability and low loss can be obtained.

below. The invention will now be explained in detail (with reference to the drawings).

Figures 1 and 2 show ferric oxide (p6x, Og,)5
The basic composition consists of 2 mol. of manganese oxide (rvinO), 26 mol.
1 Weight value, bismuth oxide (BizOi) 0.005-
0.05, in1%, dlllllized Hakufu A (Vz
Os) 0. Oo3~0. Figure 1 shows the characteristic curve of the initial magnetic permeability μiac when os ffljt% is added singly or in combination, mixed, calcined and then fired at 1300°0.
O to 0.01Wt%, songs #1 to songs 11+115
are respectively V t Os 0. 0.005, (1,0
Figure 2 shows VxOs.
0.01wt%, curves 6 to 10 are C
aO 0.0,005.0,01.0,05.0,1w
t% added. Also, Fig. 3 is a graph of the loss coefficient in the case of Fig. 1, hb, curve 11 to song #! 15 hV*os 0.0.005.0.01, o, as
4 is a graph of the loss coefficient in the case of FIG. , 0.0
5.0.1 wt% was added. From the drawing, it can be seen that the addition of calcium oxide and vanadium oxide alone does not improve AIAC, but when combined with bismuth oxide,
It can be seen that the aiac is significantly improved in the range of 90,005 to 0.03 wt%.

In addition, Cab, BizOi gradient addition, Ca0
0, C11-C, 03wt% Bi2's 0.005~
In the range of 0.05 wt%, the loss is significantly reduced without causing Aiac to decrease. Also, v206, Bi
zOi belly.

Combined addition K x 9 VxOs o, oos ~0.0
5 wt%, BixusO,005-0,05 wt%
without reducing the AIAC in the range of
Loss becomes smaller.

CaO1di20s, V2 (by J6 composite addition,
Ca00.01-0.03wt%, Bit's 0.0
05~0.05wt, VxOs O,005~0.0
Within the range of 5 wt%, the loss of use can be significantly reduced without significantly lowering the aiac.

Example Fezes s2 mol%, MnO26mol A/%, Z
Basic composition consisting of n022 molti with CaO 0.01 or 0.0°2 weight-7%, Bit's o, oi m4%
, adding 0.01 or 0.02 of v2Qs,
After mixing in a ball mill for 20 hours and calcining at 800°C for 2 hours, it was molded into a ring-shaped sample with an outer diameter of 30°, an inner diameter of 180mm, and a height of 10nm. 1 (lKHz) of ferrite fired in a nitrogen atmosphere containing
magnetic permeability (aiac), magnetic loss coefficient (tanδ/μ
1ac) are shown in Table 1.

As detailed in Table 1 and above, according to the present invention, sb with high magnetic permeability
Since it is possible to obtain an oxide magnetic material with low loss, it is of great industrial significance.

[Brief explanation of drawings]

Figures 1 to 4 are Pet's 52Mo#%, Mn026
Molch, Zn022 morch as the main component, 'CaO1B
i2's is a graph when VzOs is added alone or in combination, sb, Figure 1 is a graph of initial magnetic permeability with CaO constant at 0.01 wt%'p, dX Figure 2 is a graph for VzOs
Figure 3 is a graph of the initial permeability with constant 0.01 wt%, Figure 3 is a graph of the loss coefficient in the case of Figure 1, and Figure 4 is the loss coefficient/number in the case of Figure 2. This is a graph of Agent Hiroshi Kajihara1 2θ Figure 1θ 0. (NO, 03θ, 058/
2θ3 (w-1% Fig. 3 Bix03 (wt %) 2nd Fig. 4 B; 203 (Wl: %)

Claims (1)

[Claims] Ferric oxide (Fears) 5O-sH1 Manganese oxide (MnO) 22-39%, Zinc oxide (ZnO
:'8~25 molti as the main component, calcium oxide (C
ab) 0.003 to 0.1 weight, t%, bismuth oxide (
Bi20g) 0.003-0.05% by weight, vanadium oxide 9A (VzOII) 0.003-0.1J
An oxide magnetic material characterized in that it simultaneously contains two subcomponents.