Electromagnet, tester and method of manufacturing magnetic memory
According to one embodiment, an electromagnet includes a first electromagnet coil having a first portion and a second portion. The first portion of the first electromagnet coil extends in a direction in parallel with a first plane. The second portion of the first electromagnet coil extends in a direction in parallel with a second plane. The first and second planes intersect at a predetermined angle.
1. An electromagnet comprising:
a first electromagnet coil having a first portion and a second portion,
wherein:
the first portion of the first electromagnet coil includes sub-portions which are parallel with a first plane and which extend in different directions that intersect with each other within the first plane,
the second portion of the first electromagnet coil includes sub-portions which are parallel with a second plane and which extend in different directions that intersect with each other within the second plane, and
the first and second planes intersect at a predetermined angle.
2. The electromagnet of claim 1 , wherein the predetermined angle is 90°.
3. The electromagnet of claim 1 , further comprising:
a tube-shaped body with a bended ring form,
wherein the first electromagnet coil is provided in a hollow portion of the tube-shaped body.
4. The electromagnet of claim 3 , wherein the tube-shaped body has an electrode of the first electromagnet coil.
5. The electromagnet of claim 3 , wherein the tube-shaped body has a cross-sectional surface of one of a square form, a circular form, and a polygonal form.
6. The electromagnet of claim 3 , wherein the tube-shaped body has a flat bottom surface which is parallel with the first plane.
7. The electromagnet of claim 1 , further comprising:
a second electromagnet coil having a third portion and a fourth portion and being independent of the first electromagnet coil,
wherein:
the third portion of the second electromagnet coil extends in a direction in parallel with a third plane,
the fourth portion of the second electromagnet coil extends in a direction in parallel with a fourth plane,
the third and fourth planes intersect at the predetermined angle, and
the second and fourth planes face each other.
8. The electromagnet of claim 7 , wherein the second and fourth planes are parallel with each other.
9. An electromagnet comprising:
a first electromagnet having a first portion and a second portion,
wherein:
the first portion of the first electromagnet includes sub-portions which are parallel with a first plane and which extend in different directions that intersect with each other within the first plane,
the second portion of the first electromagnet includes sub-portions which are parallel with a second plane and which extend in different directions that intersect with each other within the second plane, and
the first and second planes intersect at a predetermined angle.
10. The electromagnet of claim 9 , wherein the predetermined angle is 90°.
11. The electromagnet of claim 9 , wherein:
the first electromagnet includes a first electromagnet coil and a tube-shaped body with a bended ring form, and
the first electromagnet coil is provided in a hollow portion of the tube-shaped body.
12. The electromagnet of claim 11 , wherein the tube-shaped body has an electrode of the first electromagnet coil.
13. The electromagnet of claim 11 , wherein the tube-shaped body has a cross-sectional surface of one of a square form, a circular form, and a polygonal form.
14. The electromagnet of claim 11 , wherein the tube-shaped body has a flat bottom surface which is parallel with the first plane.
15. The electromagnet of claim 9 , further comprising:
a second electromagnet having a third portion and a fourth portion and being independent of the first electromagnet,
wherein:
the third portion of the second electromagnet extends in a direction in parallel with a third plane,
the fourth portion of the second electromagnet extends in a direction in parallel with a fourth plane,
the third and fourth planes intersect at the predetermined angle, and
the second and fourth planes face each other.
16. The electromagnet of claim 15 , wherein the second and fourth planes are parallel with each other.