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
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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.
Claims19
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 pentagonal, octagonal, decagonal, dodecagonal, icohsahedral, and triacontahedral polyhedron,
- the quasicrystalline material being capable of a phase change between a quasicrystalline phase and an approximant crystalline phase,
- the approximant crystalline phase having a further regular atom arrangement than an atom arrangement of the quasicrystalline phase, and
- the atom arrangement of the quasicrystalline phase being arranged quasiperiodically.
A semiconductor device comprising:
- a first electrode;
- a second electrode apart from the first electrode;
- and
- a phase change layer between the first electrode and the second electrode,
- the phase change layer including a quasicrystalline material that includes 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 has one of pentagonal, octagonal, decagonal, dodecagonal, icohsahedral, and triacontahedral polyhedron,
- the quasicrystalline material being capable of a phase change between a quasicrystalline phase and an approximant crystalline phase,
- the approximant crystalline phase having a further regular atom arrangement than an atom arrangement of the quasicrystalline phase, and
- the atom arrangement of the quasicrystalline phase being arranged quasiperiodically.
- a phase of the phase change layer being configured to change between the quasicrystalline phase and the approximant crystalline phase in response to an electric signal applied to the phase change layer through the first electrode and second electrode.
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 further regular atom arrangement than an atom arrangement of the quasicrystalline phase, and
- the atom arrangement of the quasicrystalline phase being arranged quasiperiodically.
Dependencies are inferred from the claim text.