DD100925A5 - - Google Patents

Info

Publication number: DD100925A5
Authority: DD; German Democratic Republic

Application number

DD161349A

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1971-03-04

Filing date

1972-03-03

Publication date

1973-10-12

1972-03-03 Application filed filed Critical

1973-10-12 Publication of DD100925A5 publication Critical patent/DD100925A5/xx

Links

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/0302—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions
- H01F1/0311—Compounds
- H01F1/0313—Oxidic compounds
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G37/00—Compounds of chromium
- C01G37/02—Oxides or hydrates thereof
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
- G11B5/62—Record carriers characterised by the selection of the material
- G11B5/68—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent
- G11B5/70—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer
- G11B5/706—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material
- G11B5/70626—Record carriers characterised by the selection of the material comprising one or more layers of magnetisable material homogeneously mixed with a bonding agent on a base layer characterised by the composition of the magnetic material containing non-metallic substances
- G11B5/70636—CrO2
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/74—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by peak-intensities or a ratio thereof only
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/80—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70
- C01P2002/82—Crystal-structural characteristics defined by measured data other than those specified in group C01P2002/70 by IR- or Raman-data
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/10—Particle morphology extending in one dimension, e.g. needle-like
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/54—Particles characterised by their aspect ratio, i.e. the ratio of sizes in the longest to the shortest dimension
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/42—Magnetic properties
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
- C01P2006/82—Compositional purity water content

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Inorganic Chemistry (AREA)
Engineering & Computer Science (AREA)
Power Engineering (AREA)
Hard Magnetic Materials (AREA)
Magnetic Record Carriers (AREA)
Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Chemical Treatment Of Metals (AREA)
Inorganic Compounds Of Heavy Metals (AREA)

DD161349A 1971-03-04 1972-03-03 DD100925A5 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
IT2131671		1971-03-04

Publications (1)

Publication Number	Publication Date
DD100925A5 true DD100925A5 (de)	1973-10-12

Family

ID=11179995

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DD161349A DD100925A5 (de)	1971-03-04	1972-03-03

Country Status (21)

Country	Link
US (1)	US3929978A (de)
JP (1)	JPS515999B1 (de)
AT (1)	AT311923B (de)
AU (1)	AU452489B2 (de)
BE (1)	BE780219A (de)
BR (1)	BR7201246D0 (de)
CA (1)	CA960434A (de)
CH (1)	CH573361A5 (de)
CS (1)	CS152410B2 (de)
DD (1)	DD100925A5 (de)
DE (1)	DE2210059A1 (de)
DK (1)	DK137446B (de)
ES (1)	ES400413A1 (de)
FI (1)	FI53203C (de)
FR (1)	FR2128448B1 (de)
GB (1)	GB1343623A (de)
NL (1)	NL7202599A (de)
NO (1)	NO128866B (de)
PL (1)	PL83251B1 (de)
SE (1)	SE369185B (de)
ZA (1)	ZA721366B (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
IT1012202B (it) *	1974-05-09	1977-03-10	Montedison Spa	Procedimento per la produzione di biossido di cromo ferromagnetico
IT1042133B (it) *	1975-08-28	1980-01-30	Stoppani P & Co	Procedimento per il recupero e la valorizzazione degli scarti della fabbricazione dell anidri de cromica
GB1516774A (en) *	1975-10-10	1978-07-05	Anvar	Process for preparing chromium dioxide
IT1045191B (it) *	1975-10-31	1980-05-10	Montedison Spa	Procedimento per la produzione di biossido di cromo ferromagnetico
DE3536116A1 (de) *	1985-10-10	1987-04-16	Basf Ag	Verfahren zur stabilisierung von nadelfoermigem ferromagnetischem chromdioxid
US4698220A (en) *	1986-03-28	1987-10-06	E. I. Du Pont De Nemours And Company	Partitioned reduction process for ferromagnetic chromium dioxide
US4769165A (en) *	1987-01-20	1988-09-06	E. I. Du Pont De Nemours And Company	Process for synthesis of ferromagnetic chromium dioxide
DE3837646A1 (de) *	1988-11-05	1990-05-10	Basf Ag	Nadelfoermiges, im wesentlichen aus chromdioxid bestehendes, ferromagnetisches material

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3117093A (en) *	1960-10-24	1964-01-07	Du Pont	Process for the preparation of ferromagnetic chromium dioxide
FR1298581A (fr) *	1961-07-12	1962-07-13	Du Pont	Procédé de fabrication de bioxyde de chrome magnétique, produits obtenus et leur utilisation dans les éléments d'enregistrement magnétique
US3451771A (en) *	1966-10-27	1969-06-24	Du Pont	Preparation of ferromagnetic cro2 by heating cro3 in the presence of o2 and cr2o3
US3486851A (en) *	1967-03-01	1969-12-30	Du Pont	Formation of ferromagnetic cro2 by decomposition of higher valent chromium oxides

1972
- 1972-02-23 AU AU39268/72A patent/AU452489B2/en not_active Expired
- 1972-02-29 SE SE02488/72A patent/SE369185B/xx unknown
- 1972-02-29 FI FI544/72A patent/FI53203C/fi active
- 1972-02-29 NO NO00616/72A patent/NO128866B/no unknown
- 1972-02-29 NL NL7202599A patent/NL7202599A/xx not_active Application Discontinuation
- 1972-02-29 DK DK91872AA patent/DK137446B/da unknown
- 1972-03-01 CS CS1357A patent/CS152410B2/cs unknown
- 1972-03-01 GB GB962272A patent/GB1343623A/en not_active Expired
- 1972-03-01 US US231028A patent/US3929978A/en not_active Expired - Lifetime
- 1972-03-01 FR FR7206997A patent/FR2128448B1/fr not_active Expired
- 1972-03-01 ZA ZA721366A patent/ZA721366B/xx unknown
- 1972-03-01 CH CH297272A patent/CH573361A5/xx not_active IP Right Cessation
- 1972-03-02 JP JP47021104A patent/JPS515999B1/ja active Pending
- 1972-03-02 AT AT175272A patent/AT311923B/de not_active IP Right Cessation
- 1972-03-02 PL PL1972153827A patent/PL83251B1/pl unknown
- 1972-03-02 DE DE19722210059 patent/DE2210059A1/de active Pending
- 1972-03-03 BE BE780219A patent/BE780219A/xx unknown
- 1972-03-03 CA CA136,259A patent/CA960434A/en not_active Expired
- 1972-03-03 ES ES400413A patent/ES400413A1/es not_active Expired
- 1972-03-03 DD DD161349A patent/DD100925A5/xx unknown
- 1972-03-03 BR BR1246/72*[A patent/BR7201246D0/pt unknown

Also Published As

Publication number	Publication date
GB1343623A (en)	1974-01-16
FR2128448A1 (de)	1972-10-20
NL7202599A (de)	1972-09-06
PL83251B1 (de)	1975-12-31
ZA721366B (en)	1972-11-29
DK137446C (de)	1978-08-14
AT311923B (de)	1973-12-10
ES400413A1 (es)	1975-01-01
CA960434A (en)	1975-01-07
FR2128448B1 (de)	1977-04-01
AU3926872A (en)	1973-08-30
AU452489B2 (en)	1974-08-16
CH573361A5 (de)	1976-03-15
JPS515999B1 (de)	1976-02-24
DK137446B (da)	1978-03-06
DE2210059A1 (de)	1972-09-07
CS152410B2 (de)	1973-12-19
NO128866B (de)	1974-01-21
SE369185B (de)	1974-08-12
FI53203C (de)	1978-03-10
US3929978A (en)	1975-12-30
FI53203B (de)	1977-11-30
BR7201246D0 (pt)	1973-06-07
BE780219A (fr)	1972-09-04

Publication	Publication Date	Title
FR2122505A1 (de)	1972-09-01
CS166809B2 (de)	1976-03-29
FI53103B (de)	1977-10-31
DK131012C (de)	1975-10-20
FR2122006A5 (de)	1972-08-25
FR2128448B1 (de)	1977-04-01
FR2120495A5 (de)	1972-08-18
FR2123311A1 (de)	1972-09-08
DK133390C (de)	1976-10-04
FR2121955A5 (de)	1972-08-25
FR2121439B1 (de)	1977-01-21
FR2121880B1 (de)	1975-03-07
DE2106558A1 (de)	1972-06-08
DE2157503A1 (de)	1973-05-10
CS155759B1 (de)	1974-06-24
CS165472B1 (de)	1975-12-22
FR2123159A3 (de)	1972-09-08
DE2105114A1 (de)	1972-08-03
CS149156B1 (de)	1973-05-24
DE7137570U (de)	1972-01-05
CS151771B1 (de)	1973-11-19
CS151882B1 (de)	1973-11-19
CH559654A5 (de)	1975-03-14
CH565205A5 (de)	1975-08-15
BG17861A1 (de)	1974-03-05