Polycrystalline structure film having inclined lattice surfaces
View Patent ↗A polycrystalline structure film has a seed layer extending over the surface of an object. The seed layer includes crystal grains growing in the orthogonal direction perpendicular to the surface of the object. A crystalline layer extends on the surface of the seed layer. The crystal grains have normals perpendicular to lattice surfaces preferentially oriented in a predetermined direction. The normals are inclined relative to the orthogonal direction. The polycrystalline structure film allows the growth of the crystal grains in the orthogonal direction perpendicular in the seed layer. The lattice surfaces are inclined relative to the orthogonal direction in the crystal grains in the seed layer. The characteristic of the crystalline layer can be controlled under the influence of the crystal grains in the seed layer.
1. A polycrystalline structure film comprising:
a seed layer extending over a surface of an object, said seed layer including crystal grains growing in an orthogonal direction perpendicular to the surface of the object; and
a crystalline layer extending on a surface of the seed layer, wherein
said crystal grains have normals perpendicular to lattice surfaces preferentially oriented in a predetermined direction, said normals being inclined relative to the orthogonal direction.
2. The polycrystalline structure film according to claim 1 , wherein said seed layer is formed through deposition of an inclined incidence.
3. The polycrystalline structure film according to claim 2 , wherein said crystal grains are made of an alloy containing Cr and Nb.
4. The polycrystalline structure film according to claim 3 , wherein said seed layer is formed in an atmosphere containing nitrogen.
5. A magnetic recording medium comprising:
a substrate;
a seed layer extending over a surface of the substrate, said seed layer including crystal grains growing in an orthogonal direction perpendicular to the surface of the substrate; and
a crystalline layer extending on a surface of the seed layer, said crystalline layer including a magnetic layer, wherein
said crystal grains have normals perpendicular to lattice surfaces preferentially oriented in a predetermined direction, said normals being inclined relative to the orthogonal direction.
6. The magnetic recording medium according to claim 5 , wherein said substrate is formed in a disk-shape, said normals being inclined within corresponding orthogonal planes each extending in the orthogonal direction and including a radius line of the substrate.
7. The magnetic recording medium according to claim 6 , wherein said lattice surfaces are inclined to descend in an outward direction along a radial direction of the substrate.
8. The magnetic recording medium according to claim 7 , wherein said crystal grains are made of an alloy containing Cr and Nb.
9. The magnetic recording medium according to claim 8 , wherein said seed layer is formed through deposition of an inclined incidence.
10. The magnetic recording medium according to claim 9 , wherein said seed layer is formed in an atmosphere containing nitrogen.
11. The magnetic recording medium according to claim 8 , wherein a texture is established over the surface of the substrate.
12. The magnetic recording medium according to claim 8 , wherein said magnetic recording medium is incorporated within a magnetic storage device.