Ru Ruthenium
Serves as a photocatalyst for generating hydrogen from water.
Contributes to increased recording capacity of hard disks.
Hard disk
Increase recording capacity
ruthenium
Ruthenium (Ru) is used in one of the layer configurations of hard disk platters (magnetic disks) used as storage devices for computers, helping to increase recording capacity.
Hard disk drives (HDDs) have increased their recording capacity by raising the density of magnetic signals in the planar direction. However, if the density is increased too much, limitations arise in the stable storage of data.
As a result, magnetic signals are recorded vertically in order to further increase recording density. Ruthenium is an essential material for achieving this "perpendicular magnetic recording".
Precious Metal Element Data
| Atomic Number | 44 |
|---|---|
| atomic weight | 101.07 |
| Stable Isotope | 96Ru,98Ru,99Ru,100Ru,101Ru,102Ru,104Ru |
| crystal structure | hcp (c/a<1.63) |
| Metallic | Trans.Metal |
| Shell structure | 2,8,18,15,1 |
| Occupied Orbit | 4d7 |
| Oxidation state | 2,3,4,6,8 |
| Atomic radius | 1.33 |
| Shared bond radius | 1.25 |
| Atomic capacitance | 8.3 |
| Density (293K) | 12.41 |
| Melting point | 2250 |
| Boiling Point | 4155 |
| Specific heat | 0.238 |
| melting heat | 21.50 |
| heat of vaporization | 493.0 |
| Thermal conductivity (273K) | 150 |
| Electrical resistivity (273K) | 7.6 |
| Linear thermal expansion coefficient (293K) | 8.2 |
| First ionization potential | 7.36050 |
| Second ionization potential | 16.76 |
| Electron Affinity | 1.05 |
| Electronegativity | 2.2 |
| Year of Discovery | 1844 |
