Magnetic Material and Magnetic Element
AssigneeNippon Telegraph and Telephone Corporation
InventorsYuki Wakabayashi, Yoshiharu Krockenberger, Hideki Yamamoto, Yoshitaka Taniyasu
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Abstract
A magnetic material is constituted of a ferromagnetic or ferrimagnetic insulator in a double perovskite structure of Sr3-xAxOs1-yByO6 (0.5≤x≤0.5, −0.5≤y≤0.5). A is an alkali metal or alkaline earth metal atom, and B is a transition metal atom, alkali metal atom, or alkaline earth metal atom). The insulator may be Sr3OsO6, where x=y=0 in the above formula. Sr3OsO6 is formed to have a cubic crystal structure where strontium atoms, osmium atoms, and oxygen atoms are arranged at lattice points.
Claims13
-4. (canceled)
A magnetic material which is constituted of:
- a ferromagnetic or ferrimagnetic insulator in a double perovskite structure of Sr3-xAxOs1-yByO6;
- wherein −0.5≤x≤0.5;
- wherein −0.5≤y≤0.5;
- wherein A is an alkali metal or alkaline earth metal;
- wherein B is a transition metal, an alkali metal atom, or analkaline earth metal atom;
- and
- wherein an atomic percentage of Sr is in a range of 25 at % to 35 at %.
A magnetic device comprising:
- a magnetic layer made from a ferromagnetic insulator in a double perovskite structure of Sr3-xAxOs1-yByO6, wherein −0.5≤x≤0.5, wherein −0.5≤y≤0.5, wherein A is an alkali metal or alkaline earth metal, wherein B is a transition metal, an alkali metal atom, or analkaline earth metal atom, and wherein an atomic percentage of Sr is in a range of 25 at % to 35 at %;
- a first electrode;
- and
- a second electrode, the magnetic layer is between the first electrode and the second electrode.
The magnetic device according to claim ii, wherein the ferromagnetic insulator is constituted of Sr3OsO6.
The magnetic device according to claim ii, wherein:
- the ferromagnetic insulator has a cubic crystal structure.
Dependencies are inferred from the claim text.