Oxygen partial pressure regulation by use of organic oxygen-buffering materials such as transition metal salens in hermetically sealed electronic devices environment and related assemblies and methods
An oxygenating system for treating an atmosphere of a magnetic storage device can include an oxygenating material inside a sealed casing of the magnetic storage device and comprising an oxygenated salen of formula (I): where M can be a metal selected from Co, Ni, Mn, Fe or Cu, and R1, R2, R3, R4, R5, R6, R7 and R8 are independently substitutions on aromatic and ethylene diamine portions such as, but not limited to, H, F, Cl, Br, I, carbonyl, carboxyl, hydroxyl, alkyl, aryl, amine, amide, nitro, or other typical electron withdrawing groups or electron donating groups.
1 . An oxygenating system for treating an atmosphere of a magnetic storage device, the system comprising:
an oxygenating material inside a sealed casing of the magnetic storage device, the oxygenating material comprising an oxygenated salen of formula (I):
where M is a metal selected from Co, Ni, Mn, Fe or Cu, and R1, R2, R3, R4, R5, R6, R7 and R8 are independently H, F, Cl, Br, I, carbonyl, carboxyl, hydroxyl, alkyl, aryl, amine, amide, nitro, or an electron donating group or an electron withdrawing group.
2 . The oxygenating system of claim 1 , wherein R1 and R2 are F.
3 . The oxygenating system of claim 1 , wherein R1 and R2 are H.
4 . The oxygenating system of claim 1 , wherein M is Co and R1, R2, R3, R4, R5, R6, R7 and 8 are H, and the oxygenating material is referred to as Co(salen), wherein the Co(Salen) has at least one of the following crystalline structures:
γCo(salen);
δCo(salen);
εCo(salen); or
ζCo(salen).
5 . The oxygenating system of claim 4 , wherein more than one Co(salen) crystalline structure is present so as to effuse oxygen at different temperatures.
6 . The oxygenating system of claim 1 , wherein the oxygenating material further comprises at least one inorganic material selected from the group consisting of permanganates, peroxides, percarbonates and combinations thereof.
7 . The oxygenating system of claim 1 , wherein the oxygenating material comprises more than one of the oxygenated salen to control an oxygen releasing profile in the magnetic storage device.
8 . The oxygenating system of claim 7 , wherein the salen is Co(salen), and the Co(salen) is mixed with at least one of Co(3F-salen) and Co(5F-salen) to control the oxygen releasing profile.
9 . The oxygenating system of claim 1 :
wherein the oxygenating material is inside a cell inside the sealed casing of the magnetic storage device, and
wherein an oxygen permeable membrane covers an opening in the cell.
10 . The oxygenating system of claim 9 , wherein the oxygen permeable membrane comprises at least one of low density polyethylene, high density polyethylene, ethylene vinyl acetate, polyurethane, polyvinyl alcohol, or isoprene rubber, and wherein the cell is gas-impermeable and comprises at least one of aluminum, steel, nickel, zinc or plastic.
11 . The oxygenating system of claim 9 , wherein the oxygenating material is in the form of a powder or tablets.
12 . The oxygenating system of claim 9 , wherein the oxygenating material is coated on zeolites or nanotubes.
13 . A magnetic storage device comprising:
the oxygenating system of claim 9 ;
a temperature control device configured to control the temperature of the oxygenating material;
a temperature sensor;
a pressure sensor;
a valve configured to vent the cell; and
a controller configured to control the temperature control device and the valve based on data from at least one of the temperature sensor or the pressure sensor, to control the temperature of the oxygenating material.
14 . The magnetic storage device of claim 13 , wherein the temperature control device comprises a laser inside the sealed casing, the laser being configured to heat the oxygenating material.
15 . The magnetic storage device of claim 13 , further comprising an oxygen sensor and the pressure sensor inside the sealed casing, and the sealed casing encloses an atmosphere containing He.
16 . A magnetic storage device comprising:
the oxygenating system of claim 1 ;
at least one magnetic head inside the sealed casing;
a magnetic recording medium inside the sealed casing;
a drive mechanism for positioning the at least one magnetic head over the magnetic recording medium; and
a controller electrically coupled to the at least one magnetic head for controlling operation of the at least one magnetic head.
17 . The oxygenating system of claim 1 , wherein the oxygenating material is incorporated into paint.
18 . An oxygenating system for treating an atmosphere of a magnetic storage device, comprising:
an oxygenating material inside a sealed casing of the magnetic storage device, the oxygenating material comprising an oxygenated salen of formula (II):
where M is a metal selected from Co, Mn, Fe or Cu, and R1, R2, R3 and R4 are independently selected from F, Br, I, Cl, an alkyl group, an electron donating group or an electron withdrawing group.
19 . The oxygenating system of claim 18 , wherein M is Co and R1, R2, R3 and R4 are independently H or F.
20 . The oxygenating system of claim 18 , wherein M is Co and R1, R2, R3 and R4 are H.
21 . The oxygenating system of claim 18 , wherein the oxygenating material comprises more than one of the oxygenated salen to control an oxygen releasing profile in the magnetic storage device.
22 . The oxygenating system of claim 21 , wherein the salen is Co(salen), and the Co(salen) is mixed with at least one of Co(3F-salen) and Co(5F-salen) to control the oxygen releasing profile in the magnetic storage device.
23 . The oxygenating system of claim 18 :
wherein the oxygenating material is inside a cell inside the sealed casing of the magnetic storage device, and
wherein an oxygen permeable membrane covers an opening in the cell.
24 . The oxygenating system of claim 18 , wherein the oxygenated salen comprises formula (IIa):
wherein M is Co and R1, R2, R3 and R4 are H, and the oxygenating material is referred to as Co(salen), wherein the Co(Salen) has at least one of the following crystalline structures:
γCo(salen);
δCo(salen);
εCo(salen); or
ζCo(salen).
25 . The oxygenating system of claim 24 , wherein more than one Co(salen) crystalline structure is present so as to effuse oxygen at different temperatures.
26 . The oxygenating system of claim 24 :
wherein the oxygenating material is inside a cell inside the sealed casing of the magnetic storage device, and
wherein an oxygen permeable membrane covers an opening in the cell.
27 . The oxygenating system of claim 26 :
wherein the oxygenating material is in the form of a powder or tablets;
wherein the oxygenating material is coated on zeolites or nanotubes; or
wherein the oxygenating material is incorporated into paint.
28 . A magnetic storage device comprising:
the oxygenating system of claim 18 ;
at least one magnetic head inside the sealed casing;
a magnetic recording medium inside the sealed casing;
a drive mechanism for positioning the at least one magnetic head over the magnetic recording medium; and
a controller electrically coupled to the at least one magnetic head for controlling operation of the at least one magnetic head.