Patent ID: 11963459
Assignee: KIOXIA CORPORATION
Field: Computer technology (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 0:
1. A switching device, comprising: a first electrode; a second electrode; and a switching layer disposed between the first electrode and the second electrode, wherein
the switching layer contains a material containing a first cation element Z, tellurium, and nitrogen, wherein
the material contains 5 atomic % or more of each of the first cation element Z, tellurium, and nitrogen, and
when an atomic ratio of tellurium is X, an atomic ratio of nitrogen is Y, an atomic ratio of the first cation element Z is W, a ratio of Z2Te3 to ZN on a straight line connecting a compound of the first cation element Z with tellurium and nitride of the first cation element Z in a ternary phase diagram of the first cation element Z, tellurium, and nitrogen is A, and a change amount in the atomic ratio of nitrogen from the straight line connecting Z2Te3 and ZN in the ternary phase diagram is B, the material has a composition satisfying:

X=1.2(1−A)(0.5+B)  General equation 1:

Y=A(0.5+B)  General equation 2:

W=1−X−Y  General equation 3:

where −0.06≤B≤0.06 is satisfied when ⅓>A and ¾<A, and −0.06≤B and Y≤0.45 are satisfied when ⅓≤A≤¾.