41.
    发明专利
    未知

    公开(公告)号:DE68925459T2

    公开(公告)日:1996-09-05

    申请号:DE68925459

    申请日:1989-10-19

    Applicant: IBM

    Abstract: A process for forming chromium dioxide thin films which are receptive to high density magnetic recording. The process comprises depositing both chromium and oxygen on a substrate by evaporative techniques and concurrently bombarding the substrate with high energy ions of at least one of the film constituents to form a latent CrOx film forming layer. The process is carried out at approximately room temperature. The as-grown latent film forming layer is subsequently heat treated by a rapid thermal anneal step which raises the temperature of the as-grown fillm to about 500 DEG C. The rapid thermal anneal step preferably comprises a series of at least five separate pulses over a 10-second time span. After the rapid thermal anneal, the sample is rapidly quenched to room temperature.

    42.
    发明专利
    未知

    公开(公告)号:DE69106956D1

    公开(公告)日:1995-03-09

    申请号:DE69106956

    申请日:1991-06-11

    Applicant: IBM

    Abstract: A method and apparatus are disclosed for conducting a physical process and a chemical reaction by exposing a material containing a volatile substance to microwave radiation where the morphology of said material will change when exposed to such radiation. The power of said radiation is adjusted over time as the morphology of the material changes to maximize the effect of the radiation in order to produce a product in a minimum amount of time that is substantially free of said volatile substance. The method and apparatus can also be used to conduct such a process or reaction with materials that do not contain a volatile material. In one embodiment a method and apparatus are disclosed for manufacturing a polyimide from a precursor in a solvent by exposing the precursor to microwave radiation in a tuneable microwave resonant cavity (2) that is tuned during imidization to achieve critical coupling of the system. Microwave power is controlled to remove the solvent and obtain the desired level of reaction.

    LUMINOUS ENERGY CONVERTER
    43.
    发明专利

    公开(公告)号:HU172031B

    公开(公告)日:1978-05-28

    申请号:HUIE000717

    申请日:1975-10-17

    Applicant: IBM

    Abstract: An efficient converter of photon energy to heat has been devised comprising a dense array of metal whiskers grown with spacings between the whiskers of a few wavelengths of visible light. The material selected, and tungsten is exemplary of such materials, has low emissivity, but achieves significant optical absorption by trapping the light impinging on the dense array by a geometric maze effect. The characteristics of the surface are excellent for the conversion of solar energy to heat.

    44.
    发明专利
    未知

    公开(公告)号:FR2346821A1

    公开(公告)日:1977-10-28

    申请号:FR7525826

    申请日:1975-08-11

    Applicant: IBM

    Abstract: An efficient converter of photon energy to heat has been devised comprising a dense array of metal whiskers grown with spacings between the whiskers of a few wavelengths of visible light. The material selected, and tungsten is exemplary of such materials, has low emissivity, but achieves significant optical absorption by trapping the light impinging on the dense array by a geometric maze effect. The characteristics of the surface are excellent for the conversion of solar energy to heat.

    METHOD FOR IMPROVING ADHESION BETWEEN CONDUCTIVE LAYERS AND DIELECTRICS

    公开(公告)号:CA969436A

    公开(公告)日:1975-06-17

    申请号:CA83262

    申请日:1970-05-21

    Applicant: IBM

    Abstract: 1301529 Metallizing non-conductors INTERNATIONAL BUSINESS MACHINES CORP 3 June 1970 [30 June 1969] 26714/70 Heading C7F A substrate of non-conductive material having a first cation and a first anion has introduced into the surface thereof a material having a second cation of valency different from that of the first cation to provide in said surface sites containing unbound ions, and a conductive material having a third cation different from said second cation and having an affinity for the first anion is deposited thereon. The substrate is preferably an oxide, nitride or carbide of Si or Ge, but sulphides, selenides, tellurides, phosphides, and oxidized Si are also referred to. The said second cation may be introduced as a metal or compound by ion-implantation or by forming a few monolayers on the substrate surface, e.g. by vapour deposition, and heating to cause diffusion thereinto; the second cation may be Al, P, Fe, Cr, Mg, Ta, Zr, Be or B. The conductive material with the third cation may be deposited by sputtering, vacuum deposition, or chemical vapour deposition at less than 600‹C. and may be Mo, V, W, Nb or Ta. Typically, SiO 2 is implanted with Al and then coated with W, e.g. from WF 6 and H 2 .

    48.
    发明专利
    未知

    公开(公告)号:DE69333604T2

    公开(公告)日:2005-09-15

    申请号:DE69333604

    申请日:1993-02-01

    Applicant: IBM

    Abstract: Capping a low resistivity metal conductor line or via with a refractory metal allows for effectively using chemical-mechanical polishing techniques because the hard, reduced wear, properties of the refractory metal do not scratch, corrode, or smear during chemical-mechanical polishing. Superior conductive lines and vias are created using a combination of both physical vapor deposition (e.g., evaporation or collimated sputtering) of a low resistivity metal or alloy followed by chemical vapor deposition (CVD) of a refractory metal and subsequent planarization. Altering a ratio of SiH 4 to WF 6 during application of the refractory metal cap by CVD allows for controlled incorporation of silicon into the tungsten capping layer. Collimated sputtering allows for creating a refractory metal liner in an opening in a dielectric which is suitable as a diffusion barrier to copper based metallizations as well as CVD tungsten. Ideally, for faster diffusing metals like copper, liners are created by a two step collimated sputtering process wherein a first layer is deposited under relatively low vacuum pressure where directional deposition dominates (e.g., below 1mTorr) and a second layer is deposited under relatively high vacuum pressure where scattering deposition dominates (e.g., above 1mTorr). For refractory metals like CVD tungsten, the liner can be created in one step using collimated sputtering at higher vacuum pressures.

    49.
    发明专利
    未知

    公开(公告)号:DE69329663D1

    公开(公告)日:2000-12-21

    申请号:DE69329663

    申请日:1993-02-01

    Applicant: IBM

    Abstract: Capping a low resistivity metal conductor line or via with a refractory metal allows for effectively using chemical-mechanical polishing techniques because the hard, reduced wear, properties of the refractory metal do not scratch, corrode, or smear during chemical-mechanical polishing. Superior conductive lines and vias are created using a combination of both physical vapor deposition (e.g., evaporation or collimated sputtering) of a low resistivity metal or alloy followed by chemical vapor deposition (CVD) of a refractory metal and subsequent planarization. Altering a ratio of SiH 4 to WF 6 during application of the refractory metal cap by CVD allows for controlled incorporation of silicon into the tungsten capping layer. Collimated sputtering allows for creating a refractory metal liner in an opening in a dielectric which is suitable as a diffusion barrier to copper based metallizations as well as CVD tungsten. Ideally, for faster diffusing metals like copper, liners are created by a two step collimated sputtering process wherein a first layer is deposited under relatively low vacuum pressure where directional deposition dominates (e.g., below 1mTorr) and a second layer is deposited under relatively high vacuum pressure where scattering deposition dominates (e.g., above 1mTorr). For refractory metals like CVD tungsten, the liner can be created in one step using collimated sputtering at higher vacuum pressures.

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