1. An electrical connector for attachment to a coaxial cable, the coaxial cable comprising a center conductor and a dielectric layer surrounding the center conductor, the electrical connector comprising:
a longitudinal axis;
a back end for receiving the coaxial cable;
a front end;
a body;
a post fixedly mounted within the body; and
a contact assembly movably mounted to the post, the contact assembly comprising:
a guide,
a pin fixedly mounted to the guide, the pin having a front end and a back end, and
a clip for making electrical and mechanical contact with the center conductor of the coaxial cable, the clip fixedly mounted to a back end of the pin;
wherein the contact assembly is capable of moving along the longitudinal axis toward the front end of the electrical connector in response to insertion of the coaxial cable into the back end of the electrical connector, wherein the front end of the pin protrudes from the body when the coaxial cable is fully inserted into the back end of the electrical connector.
2. The electrical connector of claim 1, in which a back side of the guide has an opening at the longitudinal axis for receiving the center conductor of the coaxial cable.
3. The electrical connector of claim 2, in which the back side of the guide is funnel-shaped to guide the center conductor of the coaxial cable toward the opening in the guide.
4. The electrical connector of claim 2, in which the dielectric layer of the coaxial cable moves the contact assembly.
5. The electrical connector of claim 2, in which the opening in the guide is viewable to a user during attachment until the center conductor of the coaxial cable enters the opening.
6. The electrical connector of claim 1, in which a back side of the guide is funnel-shaped with an opening at the longitudinal axis for receiving the center conductor of the coaxial cable, such that the dielectric layer, and not the center conductor, of the coaxial cable moves the contact assembly.
7. An RCA connector for attachment to a coaxial cable, the coaxial cable comprising a center conductor and a dielectric layer surrounding the center conductor, the electrical connector comprising:
a longitudinal axis;
a back end for receiving the coaxial cable;
a front end;
a body;
a post fixedly mounted within the body; and
a contact assembly movably mounted within the post, the body, the post and the contact assembly having a common longitudinal axis; the contact assembly comprising:
a guide,
a pin fixedly mounted to the guide, the pin having a front end and a back end, and
a clip for making electrical and mechanical contact with the center conductor of the coaxial cable, the clip fixedly mounted to a back end of the pin;
wherein the contact assembly is capable of longitudinally moving toward the front end of the electrical connector, such that the front end of the pin moves from a first position completely within the body to a second position at least partially protruding from the front end of the body, in response to insertion of the coaxial cable into the back end of the RCA connector.
8. The RCA connector of claim 7, in which the back side of the guide has an opening at the longitudinal axis for receiving the center conductor of the coaxial cable.
9. The RCA connector of claim 8, in which the back side of the guide is funnel-shaped to guide the center conductor of the coaxial cable toward the opening in the guide.
10. The RCA connector of claim 8, in which the dielectric layer of the coaxial cable moves the contact assembly.
11. The RCA connector of claim 8, in which the opening in the guide is viewable to a user during attachment until the center conductor of the coaxial cable enters the opening.
12. The RCA connector of claim 7, in which a back side of the guide is funnel-shaped with an opening at the longitudinal axis for receiving the center conductor of the coaxial cable, such that the dielectric layer, and not the center conductor, of the coaxial cable moves the contact assembly.
13. A BNC connector for attachment to a coaxial cable, the coaxial cable comprising a center conductor and a dielectric layer surrounding the center conductor, the electrical connector comprising:
a longitudinal axis;
a back end for receiving the coaxial;
a front end;
a body;
a post fixedly mounted within the body; and
a contact assembly movably mounted within the post, the body, the post and the contact assembly having a common longitudinal axis; the contact assembly comprising:
a guide,
a pin fixedly mounted to the guide, the pin having a front end and a back end, and
a clip for making electrical and mechanical contact with the center conductor of the coaxial cable, the clip fixedly mounted to a back end of the pin;
wherein the contact assembly is capable of longitudinally moving toward the front end of the electrical connector in response to insertion of the coaxial cable into the back end of the BNC connector.
14. The BNC connector of claim 13, in which the back side of the guide has an opening at the longitudinal axis for receiving the center conductor of the coaxial cable.
15. The BNC connector of claim 14, in which the back side of the guide is funnel-shaped to guide the center conductor of the coaxial cable toward the opening of the guide.
16. The BNC connector of claim 14, in which the dielectric layer of the coaxial cable moves the contact assembly.
17. The BNC connector of claim 14, in which the opening in the guide is viewable to a user during attachment until the center conductor of the coaxial cable enters the opening.
18. The BNC connector of claim 13, in which a back side of the guide is funnel-shaped with an opening at the longitudinal axis for receiving the center conductor of the coaxial cable, such that the dielectric layer, and not the center conductor, of the coaxial cable moves the contact assembly.
19. An F connector for attachment to a coaxial cable, the coaxial cable comprising a center conductor and a dielectric layer surrounding the center conductor, the electrical connector comprising:
a longitudinal axis;
a back end for receiving the coaxial cable;
a front end;
a body;
a post fixedly mounted within the body; and
a contact assembly movably mounted within the post, the body, the post and the contact assembly having a common longitudinal axis; the contact assembly comprising:
a guide,
a pin fixedly mounted to the guide, the pin having a front end and a back end, and
a clip for making electrical and mechanical contact with the center conductor of the coaxial cable, the clip fixedly mounted to a back end of the pin;
wherein the contact assembly is capable of longitudinally moving toward the front end of the electrical connector, such that the front end of the pin moves from a first position completely within the body to a second position wherein the pin at least partially protrudes from the front end of the body, in response to insertion of the coaxial cable into the back end of the F connector.
20. The F connector of claim 19, in which a back side of the guide has an opening at the longitudinal axis for receiving the center conductor of the coaxial cable.
21. The F connector of claim 20, in which the back side of the guide is funnel-shaped to guide the center conductor of the coaxial cable toward the opening in the guide.
22. The F connector of claim 20, in which the dielectric layer of the coaxial cable moves the contact assembly.
23. The F connector of claim 20, in which the opening in the guide is viewable to a user during attachment until the center conductor of the coaxial cable enters the opening.
24. The F connector of claim 19, in which a back side of the guide is funnel-shaped with an opening at the longitudinal axis for receiving the center conductor of the coaxial cable, such that the dielectric layer, and not the center conductor, of the coaxial cable moves the contact assembly.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1-44. (canceled)
45. Method of implementation of a magnetocaloric agent, in particular for magnetic refrigeration, by means of at least one compound having the following general formula (I) and a crystalline structure of Ni3Sn2 type:
Mn3-(x+x\u2032)TxT\u2032x\u2032Sn2-(y+y\u2032)XyX\u2032y\u2032\u2003\u2003(I)
in which:
T and T\u2032 are chosen among: Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Ru, Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X and X\u2032 are chosen among: Ga, Ge, Sb, In, Al, Cd, As, P, C, Si,
x, x\u2032, y and y\u2032 are comprised from 0 to 1, and x, x\u2032, y and y\u2032 are all different from 0,
x+x\u2032\u22660.5, y+y\u2032\u22660.5, and x+y\u22661.
46. Method according to claim 45, by means of at least one compound having the following general formula (II) and a crystalline structure of Ni3Sn2 type:
Mn3-(x+x\u2032)TxT\u2032x\u2032Sn2-yXy \u2003\u2003(II)
in which:
T and T\u2032 are chosen among: Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Ru, Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X is chosen among: Ga, Ge, Sb, In, Al, Cd, As, P, C, Si,
x, x\u2032, and y are comprised from 0 to 1, and x, x\u2032, y are all different from 0,
x+x\u2032\u22660.5 and x+y\u22661.
47. Method according to claim 45, by means of at least one compound having the following general formula (III) and a crystalline structure of Ni3Sn2 type:
Mn3-xTxSn2-(y+y\u2032)XyX\u2032y\u2032\u2003\u2003(III)
in which:
T is chosen among: Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Ru, Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X and X\u2032 are chosen among: Ga, Ge, Sb, In, Al, Cd, As, P, C, Si,
x, y and y\u2032 are comprised from 0 to 1,
x+x\u2032\u22660.5, y+y\u2032\u22660.5, and x+y\u22661, and x, y, y\u2032 are all different from 0.
48. Method according to claim 45, by means of at least one compound having the following general formula (II) and a crystalline structure of Ni3Sn2 type:
Mn3-xTxSn2-yXy \u2003\u2003(IV)
in which:
T is chosen among: Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X is chosen among: Ge, Sb, In, Al, Cd, C, Si,
x and y are comprised from 0 to 1 x+y\u22661; and x+y is different from 0.
49. Method according to claim 45, by means of at least one compound having the following general formula (IV) and a crystalline structure of Ni3Sn2 type:
Mn3-xTxSn2-yXy \u2003\u2003(IV)
in which:
T is chosen among: Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Ru, Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X is chosen among: Ga, Ge, Sb, In, Al, Cd, As, P, C, Si,
x and y are comprised from 0 to 1, x and y are different from 0, and x+y\u22661.
50. Method according to claim 45, by means of at least one compound having the following general formula (V) and a crystalline structure of Ni3Sn2 type:
Mn3-xTxSn2 \u2003\u2003(V)
in which:
T is chosen among: Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
x is comprised from 0 to 1 and x is different from 0.
51. Method according to claim 45, by means of at least one compound having the following general formula (VI) and a crystalline structure of Ni3Sn2 type:
Mn3Sn2-yXy \u2003\u2003(VI)
in which:
X is chosen among: Ge, In, Al, Cd, As, P, C, Si,
y is comprised from 0 to 1 and y is different from 0.
52. Method according to claim 45, wherein the cooling capacity q for a magnetic field applied from 0 to about 5 T is comprised from about 50 mJcm3 to about 5000 mJcm3 particularly from about 100 mJcm3 to about 4000 mJcm3, more particularly from about 500 mJcm3 to about 3000 mJcm3 and more particularly from about 1000 mJcm3 to about 2000 mJcm3.
53. Method according to claim 45, wherein said compound comprises two peaks which are in a temperature range from about 50 K to about 550 K, particularly from about 100 K to about 400 K, more particularly from about 150 K to about 350 K and more particularly from about 200 K to about 300 K.
54. Method of implementation of a magnetocaloric agent, in particular for magnetic refrigeration, by means of a composition having the following general formula (VII):
(A , B) \u2003\u2003(VII)
in which:
A is at least one compound selected from the group consisted of:
a compound having the following general formula (I) and a crystalline structure of Ni3Sn2 type:
Mn3-(x+x\u2032)TxT\u2032x\u2032Sn2-(y+y\u2032)XyX\u2032y\u2032\u2003\u2003(I)
in which:
T and T\u2032 are chosen among: Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Ru, Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X and X\u2032 are chosen among: Ga, Ge, Sb, In, Al, Cd, As, P, C, Si,
x, x\u2032, y and y\u2032 are comprised from 0 to 1,
x+x\u2032\u22660.5, y+y\u2032\u22660.5, and x+x\u2032+y+y\u2032\u22661,
B is at least a second magnetocaloric material having a transition peak comprised from about 290 to about 340 K chosen from the group consisting of Gd, MgMn6Sn6, Mn4Ga2Sn, Gd5Si4-zGez, Gd5(Si1-zGez)4, MnFeP1-zAsz,
z being comprised from 0 to 1.
55. Method according to according to claim 54, wherein the ratio (ww) between A and B is from about 0.01 to about 99, particularly from about 0.1 to about 10 and more particularly from about 0.5 to about 5.
56. Method according to claim 54, wherein the cooling capacity for a magnetic field applied from about 0 to about 5 T is comprised from about 50 mJcm3 to about 5000 mJcm3 particularly from about 100 mJcm3 to about 4000 mJcm3, more particularly from about 500 mJcm3 to about 3500 mJcm3 and more particularly from about 1000 mJcm3 to about 3000 mJcm3.
57. Method according to claim 54, wherein said peaks are in a temperature range from about 50 K to about 600 K, particularly from about 100 K to about 500 K, more particularly from about 150 K to about 400 K and more particularly from about 200 K to about 350 K.
58. Method according to claim 54, wherein the temperature range between at least two adjacent peaks and particularly between all the adjacent peaks is comprised from about 50 K to about 100 K.
59. Magnetocaloric material having the following general formula (I) and a crystalline structure of Ni3Sn2 type:
Mn3-(x+x\u2032)TXT\u2032x\u2032Sn2-(y+y\u2032)XyX\u2032y\u2032\u2003\u2003(I)
in which:
T and T\u2032 are chosen among: Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Ru, Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X and X\u2032 are chosen among: Ga, Ge, Sb, In, Al, Cd, As, P, C, Si,
x, x\u2032, y and y\u2032 are comprised from 0 to 1,
x+x\u2032\u22660.5, y+y\u2032\u22660.5, and x+x\u2032’y+y\u2032\u22661,
provided that x+x\u2032+y+y\u2032 is different from 0.
60. Magnetocaloric material according to claim 59, having the following general formula (I):
Mn3-(x+x\u2032)TXT\u2032x\u2032Sn2-(y+y\u2032)XyX\u2032y\u2032\u2003\u2003(I)
in which:
T and T\u2032 are chosen among: Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Ru, Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X and X\u2032 are chosen among: Ga, Ge, Sb, In, Al, Cd, As, P, C, Si,
x, x\u2032, y and y\u2032 are comprised from 0 to 1,
x+x\u2032\u22660.5, y+y\u2032\u22660.5, x+x\u2032+y+y\u2032\u22661, and x, x\u2032, y and y\u2032 are all different from 0.
61. Magnetocaloric material according to claim 59, having the following general structure (II):
Mn3-(x+x\u2032)TxT\u2032x\u2032Sn2-yXy \u2003\u2003(II)
in which:
T and T\u2032 are chosen among: Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Ru, Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X is chosen among: Ga, Ge, Sb, In, Al, Cd, As, P, C, Si,
x, x\u2032, and y are comprised from 0 to 1,
x+x\u2032\u22660.5, x+y\u22661, and x, x\u2032, y are all different from 0.
62. Magnetocaloric material according to claim 59, having he following general structure (III):
Mn3-xTxSn2-(y+y\u2032)XyX\u2032y\u2032\u2003\u2003(III)
in which:
T is chosen among: Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Ru, Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X and X\u2032 are chosen among: Ga, Ge, Sb, In, Al, Cd, As, P, C, Si,
x, y and y\u2032 are comprised from 0 to 1,
x+x\u2032\u22660.5, y+y\u2032\u22660.5, x+y\u22661, and x, y ,y\u2032 are all different from 0.
63. Magnetocaloric material according to claim 59, having the following general formula (IV):
Mn3-xTxSn2-yXy \u2003\u2003(IV)
in which:
T is chosen among: Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X is chosen among: Ge, In, Al, Cd, C, Si,
x and y are comprised from 0 to 1, x+y\u22661; provided that x+y is different from 0.
64. Magnetocaloric material according to claim 59, having the following general formula (IV):
Mn3-xTxSn2-yXy \u2003\u2003(IV)
in which:
T is chosen among: Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Ru, Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X is chosen among: Ga, Ge, Sb, In, Al, Cd, As, P, C, Si,
x and y are comprised from 0 to 1, x and y are different from 0, and x+y\u22661.
65. Magnetocaloric material according to claim 59, having the following general formula (V):
Mn3-xTxSn2 \u2003\u2003(V)
in which:
T is chosen among: Zr, Hf, Nb, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu, x is comprised from 0 to 1 and x is different from 0.
66. Magnetocaloric material according to claim 59, having the following general formula (VI) and a crystalline structure of Ni3Sn2 type:
Mn3Sn2-yXy \u2003\u2003(VI)
in which:
X is chosen among: Ge, In, Al, Cd, As, P, C, Si,
y is comprised from 0 to 1 and y is different from 0.
67. Magnetocaloric material according to claim 59 to, chosen from the group consisting of:
Mn3-xFexSn2-yGay wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xFexSn2-yGey wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xFexSn2-yIny wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xFexSn2-ySby wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xCoxSn2-yGay wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xCoxSn2-yGey wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xCoxSn2-yIny wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xCrxSn2-yIny wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xCoxSn2-ySby wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xNixSn2-yGay wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xNixSn2-yGey wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xNixSn2-yIny wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xNixSn2-ySby wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xNbxSn2-yGay wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xNbxSn2-yGey wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xNbxSn2-yIny wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xNbxSn2-ySby wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xZnxSn2-yGay wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xZnxSn2-yGey wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xZnxSn2-yIny wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xZnxSn2-ySby wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5.
Mn3-xFexSn2-(y+y\u2032)AsyPy\u2032 wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5, and 0\u2266y\u2032\u22660.5.
68. Magnetocaloric material according to claim 59, chosen from the group consisting of:
Mn3Sn2-yGey where 0\u2266y\u22660.5,
Mn3-xNbxSn2 where 0\u2266x\u22660.5,
Mn3-xYxSn2 where 0\u2266x\u22660.5.
Mn3-xCoxSn2-yIny wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xCrxSn2-yIny wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5,
Mn3-xFexSn2-(y+y\u2032)AsyPy\u2032 wherein 0\u2266x\u22660.5 and 0\u2266y\u22660.5, and 0\u2266y\u2032\u22660.5.
69. Magnetocaloric composition having the following general formula (VII):
(A , B) \u2003\u2003(VII)
in which:
A is at least one compound selected from the group consisted of:
a compound having the following general formula (I) and a crystalline structure of Ni3Sn2 type:
Mn3-(x+x\u2032)TxT\u2032x\u2032Sn2-(y+y\u2032)XyX\u2032y\u2032\u2003\u2003(I)
in which:
T and T\u2032 are chosen among: Ti, V, Cr, Fe, Co, Ni, Cu, Zn, Ru, Zr, Hf, Nb, Mo, or a rare earth element selected from the group consisting in: La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Sc, Y, Lu,
X and X\u2032 are chosen among: Ga, Ge, Sb, In, Al, Cd, As, P, C, Si,
x, x\u2032, y and y\u2032 are comprised from 0 to 1,
x+x\u2032\u22660.5, y+y\u2032\u22660.5, and x+x\u2032+y+y\u2032\u22661,
B is at least a second magnetocaloric material having a transition peak comprised from about 290 to about 340 K chosen from the group consisting of Gd, MgMn6Sn6, Mn4Ga2Sn, Gd5Si4-zGez, Gd5(Si1-zGez)4, MnFeP1-zAsz, z being comprised from 0 to 1.
70. Magnetocaloric composition according to claim 69, wherein the ratio (ww) between A and B is from about 0.01 to about 99, particularly from about 0.1 to about 10 and more particularly from about 0.5 to about 5.
71. Magnetocaloric composition according to claim 69, chosen from the group consisting of:
Mn3Sn2 and Gd, Mn3Sn2 and MgMn6Sn6, Mn3Sn2 and Mn4Ga2Sn, Mn3Sn2 and Gd5Si4-zGez, Gd5(Si1-zGez)4, Mn3Sn2 and MnFeP1-zAsz,
Mn3-xFexSn2 and Gd, Mn3-xFexSn2 and MgMn6Sn6, Mn3-xFexSn2 and Mn4Ga2Sn, Mn3-xFexSn2 and Gd5(Si1-zGez)4, Mn3-xFexSn2 and Gd5Si4-zGez, Mn3-xFexSn2 and MnFeP1-zAsz,
x and z being as previously defined.