Analysis of magnetization and demagnetization processes in Nd-Fe-B sintered magnets using the step method
スポンサーリンク
概要
- 論文の詳細を見る
The magnetization and demagnetization processes in the 11 types of Dy-free Nd-Fe-B sintered magnets based on the NEOMAX-50 type magnets were investigated using the step method that is our original method of measurements and analyses of minor loops with step by step increased maximum applied fields. With the decrease in average grain sizes (DAVE), the single-domain grains (SDG) volume fraction increased and inversely that of the saturable multi-domain grains (SMDG) decreased, the changing behavior was monotonous. The dependence of coercivities on the DAVE, however, showed clear change around DAVE=3.0 μm, from the increase with decreasing DAVE to the opposite relationship less than DAVE ‹ 3.0 μm. We consider that the changing in the relationships should come from the ratios of the domain width (WD) to the DAVE, and conclude that the well cutting of magnetic interactions at the grain boundaries should realize the coercivity of μ0HC ≈ 2 T in fine grain size Dy-free samples.
- 社団法人 日本磁気学会の論文
著者
-
KOBAYASHI K.
Department of Chemistry and Biotechnology, Yokohama National University
-
Hayakawa K.
Department of Biology, Faculty of Science, Chiba University
-
Sagawa M.
Intermetallics Co. Ltd.
-
Matsushita T.
Department of Materials and Life Sciences, Shizuoka Institute of Science and Technology
関連論文
- Studies on the Preparation of Pure Alkali Chlorides
- A Conceptual Design for Cosmo-biology Experiments in Earth's Orbit
- Study of the Neutron Halo and Skin Structure of ^6He and ^8He(International Workshop on Nuclear Structure-New Pictures in the Extended Isospin Space(NS07)-)
- Nucleon density distributions of unstable nuclei extracted from reaction cross sections(International Workshop on Nuclear Structure-New Pictures in the Extended Isospin Space(NS07)-)
- (E40910) Relationship the changes in oxygenation of skeletal muscle and oxygen uptake during treadmill running.
- Splicing Determines the Glycosylation State of Ameloblastin
- The Influence of Phosphorus Metabolism on the Renal Function
- MECHANICAL STRESS, REPETITIVE STRETCHING, PROMOTES MYOFIBRILLOGENESIS IN MYOTUBES IN CULTURE(Cell Biology and Morphology)Proceedings of the Seventy-First Annual Meeting of the Zoological Society of Japan
- A quantitative study of microglial and astrocytic cells in brains of Creutzfeldt-Jakob disease
- KP1 is a marker for ghost tangles and senile plaques in Alzheimer diseased brains
- Primary involvement of the lateral geniculate body produced antagonizing effect on periodic synchronouos discharges by photic stimulation in Creutzfeldt-Jakob disease
- 40% blood exchange-transfusion with Hb-vesicles in rats and observation of hematological and serum clinical laboratory tests for 2 weeks
- Daily repeated infusion of Hb-vesicles (HbV) into wistar rats for two weeks : a preliminary safety study
- Hemoglobin-vesicles as oxygen carriers : influence on phagocytic activity and histopathological changes in reticuloendothelial system
- SEXUALIZING SUBSTANCE(S) IN THE PLANARIANS(Developmental Biology)(Proceedings of the Sixty-Ninth Annual Meeting of the Zoological Society of Japan)
- Distribution of neural crest cells in the semilunar valves : Abstracts of Papers Presented at the 29th Annual Meeting of the Japanese Teratology Society, Yamagata, Japan July 13 - 14
- Distribution of avian cephalic neural crest cells in development of the heart and great arteries : ABSTRACTS OF PAPERS PRESENTED at the TWENTY-SEVENTH ANNUAL MEETING of the JAPANESE TERATOLOGY SOCIETY TOKYO, JAPAN, JULY 17-18, 1987
- Antibodies against Mycobacterial Antigens in the Synovial Fluid of Patients with Temporomandibular Disorders
- Distortion Behavior of Heat-activated Acrylic Denture-base Resin in Conventional and Long, Low-temperature Processing Methods
- EFFECTIVENESS OF CSF SHUNTING FOR TREATING VASCULAR DEMENTIA
- Indirect Observation of Inner Domain Structure in Nd_2Fe_B Sintered Magnets
- An antopsy case of Cockayne's syndrome with 47XXX : Abstracts of Papers Presented at the Thirtieth Annual Meeting of the Japanese Teratology Society Miyazaki, Japan, July 12-13, 1990
- Magneto-resistance of Nano-Fe_3O_4/Ag Granular System
- Improvement of gas exchange after intratracheal administration of liposome encapsulated hemoglobin (LEH) in two different types of experimental respiratory distress syndrome models
- Analysis of magnetization and demagnetization processes in Nd-Fe-B sintered magnets using the step method
- 28aHG-5 Critical exponents of the localization length for topological insulators
- KINETIC ENERGY MEASUREMENT OF FRAGMENT IONS BY ELECTRON IMPACT WITH TIME-OF-FLIGHT MASS SPECTROMETER
- EFFECTS OF POPULATION DENSITY ON SEXUAL INDUCTION IN PLANARIANS(Developmental Biology)(Proceedings of the Seventieth Annual Meeting of the Zoological Society of Japan)
- 25pCJ-2 Critical conductance distributions at the integer quantum Hall transitions in tight-binding model and Chalker-Coddington model
- A Case of Congenital Complete Atrioventricular Block Diagnosed before Delivery:Special Reference to Its Prognosis and Operative Indication