Electromagnet, tester and method of manufacturing magnetic memory

Patent metadata

Field	Value
Publication number	US-9818523-B2
Application number	US-201514593646-A
Country	US
Kind code	B2
Filing date	Jan 9, 2015
Priority date	Aug 19, 2014
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

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.

First claim

What is claimed is:

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.

Assignees

• Toshiba Memory Corp

Inventors

• Kishi Tatsuya

Classifications

• G11C29/56016

  Apparatus features · CPC title

• G11C2029/5002

  Characteristic · CPC title

• G11C11/16

  using elements in which the storage effect is based on magnetic spin effect · CPC title

• G11C29/50

  Marginal testing, e.g. race, voltage or current testing · CPC title

• G11C29/50016

  of retention · CPC title