公开(公告)号：US3573981A

公开(公告)日：1971-04-06

申请号：US3573981D

申请日：1967-12-14

Applicant: IBM

Inventor： AHN KIE Y ,  VIGGIANO JOSEPH M

IPC: H01F41/14 ,  C23C14/24 ,  G11B5/85 ,  H01F41/20 ,  C23C13/02 ,  C23C13/04

CPC classification number: C23C14/24 ,  H01F41/20

Abstract: THIS DISCLOSURE PROVIDES A MAGNETIC FILM WITH INDUCED UNIAXIAL ANISOTROPY, I.E., A FILM WITH AN EASY AXIS AND A HARD AXIS FOR MAGNETIZATION. THE PRACTIC OF THE DISCLOSURE INCLUDES DEPOSITION OF PARTIALLY IONIZED COMPONENTS OF A MAGNETIC MATERIAL ONTO A HEATED SUBSTRATE IN THE PRESENCE OF AN APPLIED ELECTRIC FIELD ADJACENT TO AND CONTIGUOUS WITH THE SURFACE OF THE SUBSTRATE. THE EASY AXIS OF THE INDUCED UNIAXIALY ANISTROPY IN THE DEPOSITED MAGNETIC FILM IS IN THE DIRECTION OF THE APPLIED ELECTRIC FIELD IN THE FILM. THE MAGNITUCES OF THE TEMPERATURE OF THE SURFACE OF THE SUBSTRATE AND OF THE ELECTRIC FIELD CONTROL BOTH THE MAGNITUDE AND DIRECTION OF THE UNIAXIAL ANISOTROPY IN THE FILM. THE DEGREE OF IONIZATION OF THE COMPONENTS OF THE FILM DURING VAPOR TRANSPORT TO THE SURFACE OF THE SUBSTRATE ESTABLISHES ANOTHER CONTROL OF THE RESULTANT INDUCED UNIAXIAL ANISTROPY IN THE FILM. EXEMPLARY MAGNETIC FILMS FOR THE PRACTICE OF THIS DISCLOSURE ARE NI-FE OF 81/19 RATIO OF THE ATOMIC COMPONENTS NI AND FE AND FILMS OF RARE EARTH COMPOUNDS AND ALLOYS, E.G., EUO COMPOUND AND EU-GD ALLOYS.

公开(公告)号：CA1335954C

公开(公告)日：1995-06-20

申请号：CA560149

申请日：1988-02-29

Applicant: IBM

Inventor： CHAUDHARI PRAVEEN ,  GAMBINO RICHARD J ,  KOCH ROGER H ,  LACEY JAMES A ,  LAIBOWITZ ROBERT B ,  VIGGIANO JOSEPH M

IPC: C30B1/02 ,  C01G1/00 ,  C01G3/00 ,  C30B29/22 ,  H01B12/06 ,  H01B13/00 ,  H01L39/12 ,  H01L39/24 ,  C30B23/02 ,  C30B25/02

Abstract: Superconducting transition metal oxide films are provided which exhibit very high onsets of superconductivity and superconductivity at temperatures in excess of 40.degree.K. These films are produced by vapor deposition processes using pure metal sources for the metals in the superconducting compositions, where the metals include multi-valent nonmagnetic transition metals, rare earth elements, and/or rare earth-like elements and alkaline earth elements. The substrate is exposed to oxygen during vapor deposition, and, offer formation of the film, ambient followed by at least one annealing step in an oxygen ambient and slow cooling over several hours to room temperature. The substrates chosen are not critical as long as they are not adversely reactive with the superconducting oxide film. Transition metals include Cu, Ni, Ti, and V, while the rare earth-like elements include Y, Sc, and La. The alkaline earth elements include Ca, Ba, and Sr.

公开(公告)号：CA895032A

公开(公告)日：1972-03-07

申请号：CA895032D

Applicant: IBM

Inventor： VIGGIANO JOSEPH M ,  AHN KIE Y