Permanent magnet and method for producing same

Claim 2

claim 1, wherein said permanent magnet is a bonded magnet..]. 4. A permanent .[.magnet.]. .Iadd.magnetic powder or ribbon .Iaddend.according to claim 1, wherein x is from 0.6 to 0.8, v is from 0.02 to 0.15, and z is

Claim 3

from 0.1 to 0.2. 5. A permanent .[.magnet.]. .Iadd.magnetic powder or ribbon .Iaddend.according to claim .[.2.]. .Iadd.1.Iaddend., wherein v is

Claim 4

from 0.03 to 0.12. 6. A permanent .[.magnet.]. .Iadd.magnetic powder or ribbon .Iaddend.according to claim .[.2.]. .Iadd.1.Iaddend., wherein x is

Claim 5

approximately 0.65. 7. A permanent magnet .[.according to claim 1, 2, 3, 4, 5, or 6, wherein.]. .Iadd.formed from a rapidly cooled magnetic material having a composition expressed by (Ce x La 1-x ) z (Fe 1-v B v ) 1-z , with a proviso of 0.4≦x≦0.9, 0.05≦z≦0.3, and 0.01≦v≦0.3 and containing .Iaddend.at least one element selected from the group consisting of Al, Ti, V, Cr, Mn, Zr, Hf, Nb, Ta, Mo, Ge, Sb, Sn, Bi, Ni, W, Cu, and Ag .[.is contained.]. at an atomic ratio .Iadd.u .Iaddend.of .Iadd.0<u≦.Iaddend.0.2 .[.or less.]. based on the sum of said at least one element and Fe .Iadd.and having a coercive force (iHC) of at

Claim 6

least 4 KOe.Iaddend.. 8. A permanent magnet according to claim .[.1, 2, 3, 4, 5, or 6.]. .Iadd.7 or 9.Iaddend., wherein B is partly replaced with at least one element selected from the group consisting of Si, C, P, N, Ge, and S in an atomic ratio of 0.5 or less based on a sum of B and said at

Claim 7

least one element. 9. A permanent magnet according to claim .[.1.]. .Iadd.7.Iaddend., wherein Co is contained at an atomic ratio (w) and at least one element selected from the group consisting of Al, Ti, V, Cr, Mn, Zr, Hf, Nb, Ta, Mo, Ge, Sb, Sn, Bi, Ni, W, Cu and Ag is contained at an atomic ratio (u), wherein said (w) is from more than 0 to 0.5 and said (u) is from .[.0.]. .Iadd.0.001 .Iaddend.to 0.2, with the proviso that sum of

Claim 8

(u), (w) and atomic ratio of Fe is 1.0. 10. A permanent magnet according to claim .Iadd.7 or .Iaddend.9, wherein said permanent magnet is a

Claim 9

sintered magnet. 11. A permanent magnet according to claim .Iadd.7 or

Claim 10

.Iaddend.9, wherein said permanent magnet is a bonded magnet. 12. A permanent magnet according to claim .Iadd.7 or .Iaddend.9, wherein x is

Claim 11

from 0.6 to 0.8, v is from 0.02 to 0.15, and z is from 0.1 to 0.2. 13. A permanent magnet according to claim .[.10.]. .Iadd.7 or 9.Iaddend.,

Claim 12

wherein v is from 0.03 to 0.12. 14. A permanent magnet according to claim .[.10.]. .Iadd.7 or 9.Iaddend., wherein x is approximately 0.65. .[.15. A permanent magnet having a composition of [(Ce x La 1-x ) y R 1-y ] z (Fe 1-v B v ) 1-z , wherein R is at least one rare earth element except for Ce and La, but including Y with a proviso of 0.4≦x≦0.9, 0.2<y<1.0, 0.05≦z≦0.3, 0.001≦v≦0.3, and having a coercive force (iHc) of at least 4 kOe..]. .[.16. A permanent magnet according to claim 15, wherein said permanent magnet is a sintered magnet..]. .[.17. A permanent magnet according to claim 15, wherein said permanent magnet is a bonded

Claim 13

magnet..]. 18. A permanent .[.magnet.]. .Iadd.magnetic powder or ribbon .Iaddend.according to claim .[.15.]. .Iadd.34.Iaddend., wherein x is from

Claim 14

6 to 0.8, v is from 0.02 to 0.15, and z is from 0.1 to 0.2. 19. A permanent .[.magnet.]. .Iadd.magnetic powder or ribbon .Iaddend.according

Claim 15

6 to 0.8, v is from 0.02 to 0.15, and z is from 0.1 to 0.2. 19. A permanent .[.magnet.]. .Iadd.magnetic powder or ribbon .Iaddend.according

Claim 16

to claim .[.18.]. .Iadd.34.Iaddend., wherein v is from 0.03 to 0.12. 20. A permanent .[.magnet.]. .Iadd.magnetic powder or ribbon .Iaddend.according to claim .[.19.]. .Iadd.34.Iaddend., wherein x is approximately 0.65. .[.21. A permanent magnet according to claim 15, 16, 17, 18, 19, or 20, wherein at least one element selected from the group consisting of Al, Ti, V, Cr, Mn, Zr, Hf, Nb, Ta, Mo, Ge, Sb, Sn, Bi, Ni, W, Cu, and Ag is contained at an atomic ratio of 0.2 or less based on the sum of said at

Claim 17

least one element and Fe..]. 22. A permanent magnet according to claim .[.15, 16, 17, 18, 19 or 20.]. .Iadd.23 or 31.Iaddend., wherein B is partly replaced with at least one element selected from the group consisting of Si, C, P, N, Ge, and S in an atomic ratio of 0.5 or less

Claim 18

based on a sum of B and said at least one element. 23. A permanent magnet according to claim .[.15.]. .Iadd.31.Iaddend., wherein Co is contained at an atomic ratio (w) and at least one element selected from the group consisting Al, Ti, V, Cr, Mn, Zr, Hf, Nb, Ta, Mo, Ge, Sb, Sn, Bi, Ni, W, Cu, and Ag is contained at an atomic ratio (u), wherein said (w) is from more than 0 to 0.5 and said (u) is from .[.0.]. .Iadd.0.001 .Iaddend.to 0.2, with the proviso that sum of (u), (w) and atomic ratio of Fe is 1.0.

Claim 19

A permanent magnet according to claim 23 .Iadd.or 31.Iaddend., wherein

Claim 20

said permanent magnet is a sintered magnet. 25. A permanent magnet according to claim 23 .Iadd.or 31.Iaddend., wherein said permanent magnet

Claim 21

is a bonded magnet. 26. A permanent magnet according to claim 23 .Iadd.or 31.Iaddend., wherein x is from 0.6 to 0.8, v is from 0.02 to 0.15, and z

Claim 22

is from 0.1 to 0.2. 27. A permanent magnet according to claim .[.26.].

Claim 23

.Iadd.23 or 31.Iaddend., wherein v is from 0.03 to 0.12. 28. A permanent magnet according to claim .[.26.]. .Iadd.23 or 31.Iaddend., wherein x is approximately 0.65. .[.29. A permanent magnet having a composition of [(Ce x La 1-x ) y R 1-y ] z [(Fe 1-u-w Co w M u ) 1-v B v ] 1-z with a proviso of 0.4≦x≦0.9, 0.2<y≦1.0, 0.05≦z≦0.3, 0.01≦v≦0.3, 0≦u≦0.2, 0≦w≦0.5, and M is at least one element selected from the group consisting of Al, Ti, V, Cr, Mn, Zr, Hf, Nb, Ta, Mo, Ge, Sb, Sn, Bi, Ni, W, Cu, and Ag, having a coercive force (iHc) of at least 4 kOe, having been plastically

Claim 24

worked. 30. A permanent magnet according to claim .[.29.]. .Iadd.33.Iaddend., wherein the plastic working method is a method selected from the group consisting of hot-pressing, swaging, extruding, forging, and rolling. .Iadd.31. A permanent magnet formed from a rapidly cooled magnetic material having a composition of [((Ce x La 1-x ) y R 1-y ) z ]((Ce x La 1-x ) y R 1-y ) z (Fe 1-v B v ) 1-z wherein R is at least one rare earth element except for Ce and La, but including Y with a proviso of 0.4≦x≦0.9, 0.2<y<1.0, 0.05≦z≦0.3, 0.01≦v≦0.3 containing at least one element selected from the group consisting of Al, Ti, V, Cr, Mn, Zr, Hf, Nb, Ta, Mo, Ge, Sb, Sn, Bi, Ni, W, Cu, and Ag at an atomic ratio u of 0<u≦0.2 based on the sum of said at least one element and Fe, having a coercive force (iHc) of at least 4 KOe. .Iaddend. .Iadd.32. A permanent magnet formed of a magnetic powder of claims 1 or 34. .Iaddend. .Iadd.33. A permanent magnet having a composition of ((Ce x La 1-x ) y R 1-y ) z (Fe 1-u-w Co w M u ) 1-y B v ] 1-z with a proviso of 0.4≦x≦0.9, 0.2<y<1.0, 0.05≦z≦0.3, 0.01≦v≦0.3, 0≦u≦0.2, 0≦w≦0.5, and M is at least one element selected from the group consisting of Al, Ti, V, Cr, Mn, Zr, Hf, Nb, Ta, Mo, Ge, Sb, Sn, Bi, Ni, W, Cu, and Ag having a coercive force (IiHc) of at least 4 kOe, comprising a rapidly cooled magnetic material which has been plastically worked. .Iaddend. .Iadd.34. A permanent magnetic powder or ribbon obtained by a rapid cooling method having a composition of ((Ce x La 1-x ) y R 1-y ) z (Fe 1-v B v ) 1-z , wherein R is at least one rare earth element except for Ce and La but including Y with a proviso of 0.4≦x≦0.9, 0.2<y<1.0, 0.5≦z≦0.3, 0.01≦v≦0.3, and having a coercive force (iHc) of at least 4 KOe. .Iaddend.