| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_5c6a9fd6219b32cd3893a49979951bf4 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-80
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2004-64
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-714
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01P2006-42 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F1-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B21-0622
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-712
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B82Y30-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-70626
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01F1-065 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-09
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-842
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01F1-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-706
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-714 |
| filingDate |
2006-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_90a58ab89d7e56ec95941475732a4236
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a5d34219c17100338d9b2364005e9b9f |
| publicationDate |
2007-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-2007335592-A |
| titleOfInvention |
Iron nitride magnetic powder, method for producing the same, and magnetic recording medium |
| abstract |
An iron nitride magnetic powder having significantly improved resistance (weather resistance) to deterioration with time of magnetic characteristics while maintaining excellent magnetic characteristics. A magnetic particle having an average particle diameter of 20 nm or less having a core mainly composed of Fe 16 N 2 phase and having an oxide phase derived from a metal Fe phase formed by reducing iron nitride on the outside of the core. An iron nitride-based magnetic powder that satisfies Δσs ≦ 0.8 × σs−30 in the relationship between the property index Δσs and the saturation magnetization σs. Here, Δσs = (σs−σs 1 ) / σs × 100, where σs 1 is saturation magnetization after the magnetic powder is held in an atmosphere of 60 ° C. and 90% RH for one week. In this powder, powder particles mainly composed of Fe 16 N 2 phase are exposed to a reducing gas so that a partial region from the surface of the particles is converted to a metallic Fe phase (gradual reduction treatment), and then exposed to an oxidizing gas to form the metallic Fe phase. It can obtain by making a partial area | region into the oxide phase from the surface (gradual oxidation process). [Selection] Figure 1 |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011227974-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012147833-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2017054982-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2012039461-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2011049080-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2013042721-A1 |
| priorityDate |
2006-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |