JPS5946008A - Permanent magnet - Google Patents

Abstract

PURPOSE:To obtain a magnet having high residual magnetization, high coercive force and a high energy product by an alloy using Fe as a base by constituting the permanent magnet by one kind of rear-earth elements containing a fixed quantity of Y and a magnetic anisotropic sintered body by a fixed quantity of B and Fe as the remainder. CONSTITUTION:R (where R is at least one kind of the rare-earth elements containing Y) of 8-30% at an atomic percent and the magnetic anisotropic sintered body consisting of 2-28% B and Fe as the remainder are used as magnetic materials for the permanent magnet. The quantities of Fe, B, R of a R compound and B of the magnetic material are optimized, and residual characteristics are obtained by the alloy using Fe as the base. The permanent magnet having high residual characteristics, high coercive force and the high energy product is manufactured easily by the simple alloy.

Description

[Detailed Description of the Invention] This fully developed stone is 1'dJ high and does not use cobalt, which has a small bone tilt, and is a permanent iron-based stone C for rare use.

Perpetual 1191 stone; i; i 14:yo-) friend) (11j2 wa? L roki 1 in a wide range of fields, from various garden items, δ-kei sea bream products, to large r < lj computer peripheral edge rice shells 1. This is one of the 19 most popular electric appliances in Japan.Electricity in recent years,
In response to the demands for miniaturization of electronic devices and high efficiency, there is no permanent requirement: '1;? The high performance ratio of stone material T"11 is 7-1 (Mera 2jL Ruyon Komutsu 7'c).

Typical permanent model of current Lee L 1. Koishi 1st grade (・yo Alnico,
]・-Donoelite Wa・Yobifukuha''-431 Cobalt j
3:) with lif stone.

Due to the recent instability in the state of cobalt, Alnicoi core stones containing 20 to 30% cobalt and 1% have changed to mainly oxides of iron. Cheap heart ferrite as a component will occupy the mainstream of magnet materials (・(
became. On the other hand, Xiqizhen cobalt toy 1d stone contains 5 cobalt.
Including the 0-65 weight section, there is also an amari 2 in the earth fist ore.
- It is very expensive to make one history of undamaged S11], but compared to other magnets, IL- 4=j+t
1 electric turn with high directivity 1) I started using it a lot at 31, and I started to reduce it.

Rare earth ZQ M'a stone can be widely used in a wide range of fields at low cost and in many ways:・In order to achieve this, it must not contain high quality cobalt, and as a rare earth metal, it can be used in ores. It is safe to say that the main ingredient is Otsugaruki Shichito ri, which is contained in large amounts in . As an attempt to develop such a permanent magnet, Bt isI, at least one building of the metal is tested; 1 and 1. Clark (A, E.

CIa+“k) Hasubatsuta Shinsoamorphous T I)
If Fe2 is 4.2°, Te295 is 1GOe Nor-Nelki product tMoreover, if you heat death at 300 to 500°C for 1 hour, you will have 1 IQ at room temperature, ``lt force Hc = 3.41 (O
e, maximum energy Q (BH) max = 1G to 7
I looked at what Oe f shows. Similar research SmF
Also do this for e2, and at 77° 9.2 RJ
It has been reported that it exhibits GOe. However, and-'1
These materials and 1'L are thin films made by sputtering, and are used for general speakers and motors' (3j
1Ij-,;ko,i with t stone. 1 bu otsu, J' r F e
Series alloy tv super quick, order ho71) i, l-1c = 2.
It has been reported that B K Oe tD exhibits high coercive force7
'Hi.

Furthermore, Kuhn et al. (""'0-82 Btl. 18
)O-9'rbo. When the ultra-quenched amorphous ribbon of 05LaO-05 is desensitized at 627℃, IIC= g
I have determined that I can reach KOe (L3r = 5K)
G). However, in this case, the magnetic curvature, angles of 1 or more are negative (B1-1), and +na x is low (N
-C-Koon Sen, Appl. Phys-Lejt,
39(1,0), 198], pp. 840-842).

f ft, kavacoa (L, Kal] acoff) etc. are (Ii”eo-8Bo, 2) I-x P r x
(X = O ~ 0.3 atomic ratio):r”i Ij′, I
It has been reported that it is possible to produce 1-IC at the KOe level by producing a B9° cold ribbon at room temperature in a Fe-Pr° binary system.

Konoshira's ・ヱQuiet Ribo/or Suno(Ivy W'Q ir
However, practical permanent magnets cannot be obtained from these ribbons or thin pieces.

That is, conventional Fe-B-R genealogy quenched ribbon or 1tF'
e Thread spatter? (i7. It is not possible to remove a bulk permanent magnet of any shape or size from an I exchange.

This is reported in 1/, LT Ireda Fe゛BI(, system ribbon (+7.?), curved 1 gland has poor angularity, conventional 1 It cannot be considered as a surface material.The above-mentioned sputtered 7W, :14 and ultra-quenched ribbon are essentially -F isotropic, and it is possible to create a practical permanent magnet with magnetic anisotropy from them. What you get is, in fact, extremely difficult.

Therefore, the object of the present invention is to obviate the drawbacks of the above-mentioned conventional methods. The objective is to obtain a practical permanent magnet that does not contain expensive substances such as Co. That is, the present invention t2. It is a practical permanent magnet that has good magnetic properties above room temperature, can be formed into any shape and practical size, has high squareness at the center of magnetization, and has magnetic anisotropy. The goal is to obtain something that can effectively use the abundant light rare earth elements.

According to the present invention, R (where I is at least one kind of rare earth element including Y), 2
A permanent magnet is provided which is characterized in that it is a magnetically anisotropic shifted 1ε solid consisting of ~28% B and the balance Fe.

The present invention will be explained in detail below.

The present inventor (・j) focused on the fact that R-F e-based compounds have moderate magnetic anisotropy and a large magnetic moment, and are permanent magnetic materials that do not contain CO.However, R-F
e system measurement (Ii as 1t in C!')! ;l
-f7j, which uses 11 elements, has the drawback that the value of the gift is much lower than 1, and the compound does not exist stably.

PrFe2, which has the potential to be oxidized, is also unstable at 4M, making it difficult to produce the 11-compound containing a large amount of Pr. It has disadvantages such as JIG. Therefore, Akira and Masaru set out to create two new kajimono based on Ben Pe that had only one cucumber and were stable at room temperature. This;, point A, 7) > et al rt,
We prepared many systems τ based on J'e and searched for the existence of new alloys. Sono result,” Table CC shows #t+<,
3oo''Ci?iJ A new P that shows Shun's curio
e The presence of -B-R based fabrics and materials was confirmed. Furthermore, the magnetization of this alloy is fil +ijr! As a result of measuring using a superconducting magnet, the heterogeneous magnetic field was 100 KOe or more.
I want to give birth to a child that reaches F. Gakute, this F e -
JJ - IC system compound' No. J, permanent magnet No. A'+"l
It turned out to be extremely promising.

Using this material, we can further apply the power of the gods to the practical permanent 1: 7' stage of manufacturing the magnet body. Prf
, Norizo, u, 1 effect "IJl's method 1" ・Therefore, no coercive force was produced and no L was produced.That=; However, the desired result was not achieved by melting, casting,
! →When processed by crushing, molding, and sintering methods,
A practical permanent magnet body with good magnetic properties as described above was obtained.

At this point, 1. PrC
o5. Fe213, Fe,,1? etc. 7rLru-
Although the reason is not clear, there are many things that have a huge anisotropy constant that are not permanent magnets at all. This light magnet has α'33
'M After pulverizing the powder, molding +:D binding,
It has been found that a practical permanent magnet can be obtained.

The permanent magnet of the present invention is Fe*B-based, and does not necessarily need to contain CO, and can be used as a light rare earth element rich in R7iR, and does not necessarily contain Sm
It is not necessary to use S11 or S11 as the main subject, so 4 is a safe precept and is extremely useful.

Glaze used for permanent 11th stone of the present invention): N element 1 (ha)
’ and containing light rare earths and heavy rare earths) H
It is an element, of which - and more are used. That is, Kono 11
．． (Nd, Pr, La, Ce, TI)
, I) l, -1I-J o.

E r, I-r u s S 'n * G d *
P m, Tln, Yb, "and h)' are included. As R, light rare 15:1j is sufficient, and Nd, P for cow r.
+ is t・satisfactory. -1・°・
Money is enough, but in practice it is a mixture of two or more types (miso/
Yumetal, Zidim, etc.) can be used for reasons such as convenience of acquisition.
It doesn't have to be just one element, but it can be manufactured within the scope of industrial work by two people, and it does not need to be made with impurities that are unavoidable.

As B (boron), pure boron or ferroboron can be used, and those containing AI, SI, C, etc. as impurities can also be used.

The permanent magnet of the present invention has the above-mentioned 8 to 30% It, 2 to 2
8 coefficient B, external 1'e (atomic d fraction), coercive force Hc≧IKOe, residual if magnetic flux'/l: Iff, -
B r ) 71 K C; It shows the Q% characteristic, and the maximum energy 1: +'f (old 1) m; 1x is equal to or higher than hard ferrite (~4 to IGOe level) -1-
becomes.

Light cloth, L: 3. 'l'! is one principal component (i.e. all I (
・Medium light rare earth; f450 atomic dust, top), 11-2
The composition of 4% R13-27 section J3, remaining i'tisFe is:
Maximum energy product (B1-1) n+ax ≧7MG
Oe, which is a preferable range.

Most preferably, the main component is a light rare earth, and 12 to 2
04R, 4-24%B, balance Fe (7) +VA4
The maximum energy +*(BH)max ≧10M
GOe is shown, (BH) +nax is up to 25MG
Aspects and Effects 8' of the Present Invention (Aspects and Effects of the Present Invention 8' will be described below with reference to Examples. However, the Examples and described aspects are not intended to limit the present invention to these.

Table 1 shows the magnetization of various Fe-B-R alloys (7) 16KOe at 4 116k (at normal temperature) and one curie point 1'
c (measuring I OKOe I'+). These alloys were prepared by high-frequency fermentation, cooled ingots, and blocks of approximately 0.1 mm were cut out.
−(U 5IIVl ) by 4L'+ ok (
Measure the temperature change of magnetization at I 0 KOe, and determine one Curie point (71c. 11'-; 1 (well, 66F
e14B2ONd (i 1 table, test A47) tD This is a graph showing the 11゛□V degree change of Inokoni, 7th magnetic 1hi. *It shows that TC=310'C.

Conventionally, compound B having Tc of the first coat has not been found in It.Fe alloys. By adding 13 to It・1゛e, 1;
It is recognized that there are ternary objects that are ternary of I""e-B-1, and that each of them has a Tc as shown in Table 1.

As shown in Table 1, this 1iJiL T'e-13・
1 is also a ternary spectroscopy, and the compound Yll-' (within 'i'i'L: no change in history) exists regardless of I4Q'+ii4 of 几. Is ii"'CI +l'l-1 in most cases
□: I'l>7 (1) i' c is CcHiztoi
Eki3 (10℃NU).In addition, the conventionally known 1
1・Fc Illc of the base metal is also 1”e of the present invention.
-B-11・'1゛c of the ternary compound is quite poor.

In addition, in Table 1, θ of 4 几■ 1ak: Rise 1
Directly, the sample is polycrystalline 7'j-! (I don't think this is indicative of saturated viscera, but Isu]'shi is also 6 l<
It is clearly shown that it is useful as a permanent stone shrine i:4 of the high bundle Vki Ij4'.

1st needle υ1 χzu possible) Next, find the heading in Table 1! This shows that the new compound's proboscis can be made into a high-performance permanent (1 stone body) by the I-minute sintering method. - Indicates the temporality of a permanent magnetic body consisting of objects (things outside the fNtJ group of the present invention are also shown in 7'
(The t symbol is shown as 1).

(1) R1 gold was melted by high frequency and cast into a water-cooled j'iAI mold, and the starting materials were electrolytic iron with a purity of 999 as B'e, B and 1. 7. :coboyg gold (19,38%I
-', 532% AI, o, 74% Si, 0.03% C balance Fe), R, purity 997 or higher (impurities are mainly other rare class 2 gold tA).

(2) Grinding Using a stamp mill, grind 35 pieces/varnish to 1:jp powder, then use a ball mill ('
Kodori 3 hour old crushing (3~i Q J-1I'l+)
.

(3) Orientation and shaping in magnetic field (1t) KOe ), 5
Horns at L 7cm2 [1 pressure] (4) Lifting 1000-1200℃ 1 hour A
+ Medium. 7. Completion 1 As shown in Table 2, the chemical agency that does not contain B has a magnetic force of 1-IC of 07 circles (11c of high school, 1ljl The CO is small enough that it won't blow up).
Eikyō 61i Ej J
B of 4% in atomic ratio and only 0.64 in 7 duplication ratio,',
From the 13th Canadian VC, I-1c becomes 3K Oe (trial, '11 flat 4), J3, H, t's j・2 horn (U, also known as Ilc, rapidly increases. This A'1 Tomo 7J,
(IJLI)+nax iI'', 7~20MGOe
, reaching a maximum of more than 25 MGOe, and currently -11 et al.
'L There is. εjmco', the highest grade permanent magnet,
The height of the four-year-old stone! In Table 2, N (I and Pr.

``I have shown about the station building, but it is shown at the bottom of Table 2.'': Regarding the sea urchin, the other 1, and the I combination of the ox gods, the Fe-B-tl compound is a group If eternity (・Exhibiting feldspar properties J-8 1' e -IJ -It 11. Mortuary'
! l :”lnari11i: :j;・yoQ, It
:1t f'c 11 lights perpetuity (1 stone transfer characteristic. In the 1 e, 13, 11 system, and 13 from O to J blind dog, Ilc increases by 1 9-Tsuba Remaining, -East Density J3 I initially increases from 1, 5, and J, but reaches a peak near 10 atoms, and when the amount of B is further increased, I3r decreases monotonically. Teku Akii (++
+i':', p store (no change in Y7) 2nd statement details/',! ! '(No change in content) Note 1 also has the code itsu-'itl, It comparison test (・1 permanent magnet (I4 Hayabusa)) &Jzu・kutomo''j\0(! so-1゜1-
1c or necessary - (:・Rirukara, Koi (self-sufficient/, -zu1
．． ko, I/], the amount of I5 is reduced (, shi: (heko,
: J], soil horn: Keishi Qτj uJ, sign 2 (zf
1 or 3 gen - 1% or more). The 11th body is a high school 13th grader, Atsuko and Saitoku IX, 12th grader, H,
+iiii1. There are many uses for which the seven-meter density is safe.
T-ro.

Hard Fela ``To's Br = l i'-G --
Lrun°ζni t, FC'B°1(1[1・a!
Iku11ζn, ite, E! Quantity 1t 2si
Child% or more must be 扛i-,i: Not. Naj...83
~2714♂, u%, 4-24 atoms, respectively (old 1)
rnax 7&+uUe J), t.

10~IGUe or more / ゛ (preferable eyes, also yoru J) ζ゛ i1 range.

Next, R, the dragon's last] I & save the entire range. As shown in Table 2, the higher the amount of R, the higher the Hc, which is desirable for permanent soseki. Perpetual II (as the 7th stone, IJC as mentioned earlier) -K Oe or more is required, so the red is R + Proverbs are 8 or more atoms and you can't have 9. On the other hand, 5 It is good to have high Hc without any increase in thickness, but R is very easy to finish, so it is difficult to handle.
(, Therefore, considering mass productivity, it is desirable that the amount of R is less than 30 atomic %.
If it is 7, the powder will be visible and the dog resistance will be 1F.

Also, compared to Fe, R. is high 1 ura and starts from otoshi, low 1,
But less is better. In addition, the range of I(, 11 to 24 atoms and 12 to 20 atoms is husband, b (LJfJ
) is a preferable or optimal range for setting max to 7 MGOe or more, 10 MGOe or more.

Figure 2 shows J, 'e, IJ LL concession (anisotropic sintered I-9 (as a representative example of stone, "e6s B17 Nd15
(166 and rotation composition in Table 2) initial magnetic direction hook (1
and condolence 1. >+? Seikagoku of two quadrants, ', 1. 'j
2 indicates j-8 initial magnetization curve r'M i It'', -, in low magnetic field, γ decreases and saturation is reached. The demagnetized curve 7'''12 has extremely high squareness.
From the shape of , it can be seen that the magnet's holding force is determined by the nucleus origin of the inverted i'): %, 6 Niko 1--Clean Yon type permanent j + 9i stone.

In addition, the demagnetizing curve and shape of Kasumi 2 and quotient 7 indicate that Hondori Ini 1 is a typical high-performance one-stop anisotropic magnet.

Of the 11 compounds shown in Table 2, ■ (冑′) is f・]
All items within the scope of the present invention other than the
1y < 1 (around the corner - that is, the steep rise of the initial magnetization curve - J -, the sharply decreasing enemy + ll 1st lesson, 1st grade -
IJ and 7Co Inquire like this: Eternal: 1 most stone characteristic (
・jl, conventionally 7 tears, 1 shi] ・'clL series and Ii
This can never be obtained by crystallization of an amorphous ribbon of the BR type. 1] Other conventional 3s] eternity, ', 'jA Ishiri I, I, Gold... I also know that I haven't done 1'.

Further, the permanent magnet of the present invention made of a ternary 1-numerical sintered body is made of Fe, B, Although the presence of unavoidable impurities can be tolerated, the following developments are also possible:
It can be made even more practical. That is, by replacing a part of Fle with a mixture of Co, Ni, or the like, it is possible to raise the Curie point by 1'1°C. It is also possible to replace a part of B with C, r with 1゛, 81, etc.
Improving reporting ability, Mr. 1゛ [1iIi rating becomes possible 11hi.

Furthermore, the ternary basic 1jj↓component FeBI (and A1,
T1, V Cr Mn Cu Zn Zl'
Nl) I'VIOl'a ~'~'5nJ3
By carefully adding one or more of + * SI),
High 1mm; can be double-edged.

As described above, the present invention (-) is an inexpensive Fe-based alloy that does not contain CO and has high residual crystallization, high maintenance, low energy, and high efficiency.
A magnetically anisotropic sintered permanent magnet with real>J,
It has both extremely high industrial standards.

[Brief explanation of drawings]

FIG. 1 shows F'e old (・
Graph (4') showing the temperature change characteristics of alloy
i:l+ magnetization #l/l I, . (K G ), τ crystallinity ("C)) due to A length 1ii. Vertical 1 pu (magnetization = Il (K G ), I yellow + X + magnetic field H (K
Oe)) indicates i-. Out + W 1 person to Sumitomo Chimi Metals Stock Company 1 Agent Patent Attorney No. J11 Fuji 1) Jl Procedural Amendment (Method) December 20, 1980 Commissioner of the Patent Office Kazuinu Wakasugi 1, Indication of the case 1982 Year Patent Application No. 1450722, Title of the invention: Permanent magnet 3, Relationship with the case of the person making the amendment Applicant's address: Name Sumitomo Special Metals Co., Ltd. 4, Agent 7, Specification subject to amendment Pages 10, 13 and 14. Procedural Amendment (Voluntary) 1981, 10-,. Mr. Wakasugi Wainu, Commissioner of the Japan Patent Office on the 3rd 1. Indication of the case 3. Relationship with the case by the person making the amendment Patent applicant 4. Address of the agent 1-12 Otsushinka, Minato-ku, 1 (2000) Type iii 1M'iH Tomigami! Ixpil 4NE1. Story 1
．． 11 (βu8-12:, 15 names (808
1) Date of amendment order
Spontaneous 6, Number of inventions increased by amendment None■, Invention 1 of Specification 14): ``The fence of detailed explanation has been amended as follows 11
do. (1) Specification J) Page 5, line 4 [1, "consisting of 2 to 28% B and 01." to "consisting of wood 1. of 2 to 28% B, the remainder Fe and impurities" 1 [do. (2) Same No. 7 L'Li 7 qi 1-1, [Kuki 1
``6 types are sufficient,'' was changed to ``incredibly,'' 1. (S3) Page 8, line 1, line 11, ``can be used.''
can be used, Sln, Y, La, Ce
, G d Kasa+yo et al. c11. 't> can be used as any 1111 compound such as Nd or I'r. ” to +il
'+11-6,. (4) Same KL l O? IIf, rBr>4KGJ
Revised 11 to Dr≧4 r<G J. (5) Page 11, line 6 [1 and page 14, line 10, 11]
Turn ``R71'' into ``?T''f J, 11゛. 16) Same page 11, 12 years old ■L1. Use r to make 1 (after 1゜), SL 蓓 1 市人. ``Purity is expressed in tonmo%.'' (7) Compare Table 2 on page 13 of the same page with the attached Table 2 for 7 cases. (8) No. 14, line 16 +1. Insert a Western word after "Used for many purposes." [F
e-8B -X N d ) system, add 1 to x '6.
: Change it to 0-40 and pr d! 6 and Llr,
We investigated the relationship with 1llc. The results are shown in FIG. Furthermore, in the Fe-x13-15Ndc7) system, x was changed to 0-35 to examine the relationship between B, Br, and iHc, and the results are shown in FIG. (9) Same page 15, 1
Line [1, insert a Western word after "deru." “(See Figure 4)” (10) On the same page, line 2, 11, “in Table 2” was changed to “Table 2, 3
(11) p. 16, line 7 (-1, "I understand." was changed to "Kotoka 4 ("I can see.") "I do. (12) Same page 17, line 1 1-1, rFe, B, R outside 1
``In addition to Fe, B, and R, Cu, C, S, P, Ca,
Mg, 0, Si, AI'fl-, Revision 11-#. (13) On the same page, line 2, line 11, “I allow the existence of a monkey, but” is changed to “
If f(+ can be suppressed. These impurities are
Or! It is often U person length from A-made ifi, and Cu
, P ('-p 3..5% or more [・, C, Ca, M
g64% sro, S 2.0% IJ de, 02% or less,
Si5% round 4t, A1 about 1% or more
Combine + l'5 % spit F
1 "Do. (Ill) times L't 4-5 lines 1-1.r Part Co
, N i )/1.1 so that rrrFI
Edited by Cote JM. (15) Same page 6 part of rJ, rll as c, r-r,
r', Si, etc.'' to "B's part to C, P, Si, etc."
I, AkisojA: Fill in the column for a brief description of the drawing with t(, add 4. Akirag++ r#), page 18, line 5l(, insert a missing sentence after "Wide the.") "Figure 3 shows that in the Fe-88-XNd system,
Nd disease (horizontal axis /, %) L i ll c, B
r Grano showing Dlsil relation, No. 41) 4 is Fe-x B-15N d system, Bi, j, (structure r-%) doi I-1c, B
r O, > 15i1 section 21., Sugrano, person-
・? ni sword, su. ”■1 drawing, 31st page 4. Add Figure 4. IV. Is the claim 41yl of the specification as follows? ili +1. (The following is a margin) "2. The original claim r percentage is 8.~30% 11. (Ijj l,
At least one species of rare 1-class element including Rl and Y), 2
-z 8% B, and the balance Fe and impurities to essentially 1. A permanent magnet 1゜ characterized by a magnetic field consisting of ◇L yL', and a magnetic position &'r body.'' Table 2. Figure 3.壬70) ``-Itohashi Neyu - ■l3 -4 (spontaneous) 11'J sum 5
8'l' l OJI 711'! 'r+14i' Director Kazuto Wakasugi J Junior High School 1st 11 Table No. J
Year 87-J 21 +J Application) 2 Name of the invention 7y', Kumagnet 3 Person who draws 11 ii 1y1 with I'l 1°11 Applicant's name + 711
1 't-' + Special Metal Co., Ltd. 5 Sleeve 11 - Command 11
I・1 Spontaneity 6 Appetizers (J Soga added by Month 1 1)
Number of items: None'/Detailed description of the invention and brief description of the drawings of item number j1 -) 4
11!1 Narahi (This 111 page, Figure 5 8 Contents of Yuzu+l' As shown in the attached sheet■, Detailed explanation of the invention in the specification 1 column is as follows111
Apply 1 pressure. 1')! jll I11 horoscope page 7, the end of line 17?
lIi +I-text (II/lJapanese 58th year lO month 3111・
1 hair (additional to τ in November - (Supplement 11) 1 is preferable, `` r + li ￥ stone type or preferably, j and 1 -. 2) Ming M + 1 Zhu f 514th page 1611 insert at the end (same 1゜?+li, +E book Supplement 1■) end [...
Figure 4: Small. Insert a Western word after ``. "Ranani, FeBR-gX, system (") 3 soft 4 minutes and (
BH) Examine the relationship between max and see -i<z in Figure 5. j3)
Specification 4, page 17, line 2 “supplement 1 of sentence 11 (IMI sum 58
October 3, 2015 F, I A, 1f Supplement 11-(H on page 3 of t!=f, 711) rS 2. Revised OJ to rS2.5
I'll give you 1 yu. +I, Supplement to the brief description of the drawings column in the specification 111) Insertion at the end of page 18, line 5 (round 1: ?lli II',
, at the end of supplement 1 ")" in jH, "The conflict... has no end in sight."
Insert the following C European text after 1 -J-ru. “No. 51-4 is the FeBR binary system component ratio and (BH)ma
w t7) A graph showing the relationship is shown. ” ■ Add (new) Figure 5 in Attachment H to the drawings. u l

Claims (1)

[Claims] 8 to 30 t in terms of atomic ratio (however ■ (・:・Y) rare earth 4; l'! at least one part of the element), 2 to 2
A permanent magnetic compound characterized by having a hot air anisotropic sintered body consisting of 80% B and the remainder Fc.