Quasicrystalline material and semiconductor device applying the same
AssigneesSamsung Electronics Co., Ltd., Industry-Academic Cooperation Foundation, Yonsei University
InventorsEunsung Lee, Duseop Yoon, Joungeun Yoo, Dohyang Kim
Life of this patent
Estimating the term…
Abstract
A quasicrystalline material and a semiconductor device to which the quasicrystalline material is applied are disclosed. A quasicrystalline material is based on a quasicrystalline element having one or more axis of symmetry (e.g., a 2-fold axis, a 3-fold axis, a 5-fold axis, or a higher fold axes of symmetry). The quasicrystalline material is capable of phase changes between a quasicrystalline phase and an approximant crystalline phase having a further regular atom arrangement than the quasicrystalline phase. The quasicrystalline material that may be used as a phase change material and may be applied to a phase change layer of a semiconductor device.
Claims20
A quasicrystalline material comprising:
- a polyhedral quasicrystalline element,
- the polyhedral quasicrystalline element having one or more of a 2-fold axis of symmetry, a 3-fold axis of symmetry, a 5-fold axis of symmetry, or a higher-fold axes of symmetry, the higher-fold axis of symmetry being greater than the 5-fold axis of symmetry, wherein the polyhedral quasicrystalline element having one of a pentagonal polyhedron quasicrystal material, an octagonal polyhedron quasicrystal material, a decagonal polyhedron quasicrystal material, a dodecagonal polyhedron quasicrystal material, an icohsahedral quasicrystal material, and a triacontahedral quasicrystal material,
- the quasicrystalline material being capable of a one-step phase transition between a quasicrystalline phase and an approximant crystalline phase,
- the approximant crystalline phase having a more regular atom arrangement than an atom arrangement of the quasicrystalline phase, and
- the atom arrangement of the quasicrystalline phase being arranged quasiperiodically.
A quasicrystalline material comprising:
- a polyhedral quasicrystalline element capable of a phase change between a quasicrystalline phase and an approximant crystalline phase,
- the approximant crystalline phase having a more regular atom arrangement than an atom arrangement of the quasicrystalline phase, and
- the atom arrangement of the quasicrystalline phase being arranged quasiperiodically, and
- the quasicrystalline material being capable of a one-step phase transition between a quasicrystalline phase and an approximant crystalline phase, wherein
- the quasicrystalline material includes an Al-based alloy represented by Chemical Formula 1,
- AlaSibMnc, [Chemical Formula 1]
- wherein, in Chemical Formula 1,
- a is in a range of about 53 to about 68 at. %,
- b is in a range of about 11 to about 27 at. %, and
- c is in a range of about 16 to about 23 at. %.
Dependencies are inferred from the claim text.