Nucleation fields and grain boundaries in hard magnetic materials

1993 ◽  
Vol 29 (6) ◽  
pp. 2878-2880 ◽  
Author(s):  
T. Schrefl ◽  
H.F. Schmidts ◽  
J. Fidler ◽  
H. Kronmuller
Keyword(s):  
Grain Boundaries ◽  
Magnetic Materials ◽  
Hard Magnetic Materials

scholarly journals Nanocrystalline Hard Magnetic Materials

2017 ◽  
pp. 010-018 ◽  
Author(s):  
M.I. Alymov ◽  
◽  
I.M. Milyaev ◽  
V.S. Yusupov ◽  
A.I. Milyaev ◽  
...  
Keyword(s):  
Magnetic Materials ◽  
Hard Magnetic Materials

scholarly journals Developing a reference material set for the magnetic properties of NdFeB alloy-based hard magnetic materials

2019 ◽  
Vol 15 (1) ◽  
pp. 21-27
Author(s):  
E. A. Volegova ◽  
T. I. Maslova ◽  
V. O. Vas’kovskiy ◽  
A. S. Volegov
Keyword(s):  
Magnetic Properties ◽  
Magnetic Materials ◽  
Permanent Magnets ◽  
Magnetic Loss ◽  
Magnetic Hysteresis ◽  
Hysteresis Loops ◽  
Magnetic Hysteresis Loop ◽  
Magnetic Characteristics ◽  
Hard Magnetic Materials ◽  
Certified Values

Introduction The introduction indicates the need for the use of permanent magnets in various technology fields. The necessity of measuring the limit magnetic hysteresis loop for the correct calculation of magnetic system parameters is considered. The main sources of error when measuring boundary hysteresis loops are given. The practical impossibility of verifying blocks of magnetic measuring systems element-by-element is noted. This paper is devoted to the development of reference materials (RMs) for the magnetic properties of hard magnetic materials based on Nd2Fe14B, a highly anisotropic intermetallic compound.Materials and measuring methods Nd-Fe-B permanent magnets were selected as the material for developing the RMs. RM certified values were established using a CYCLE‑3 apparatus included in the GET 198‑2017 State Primary Measurement Standard for units of magnetic loss power, magnetic induction of constant magnetic field in a range from 0.1 to 2.5 T and magnetic flux in a range from 1·10–5 to 3·10–2 Wb.Results and its discussion Based on the experimentally obtained boundary hysteresis loops, the magnetic characteristics were evaluated, the interval of permitted certified values was set, the measurement result uncertainty of certified values was estimated, the RM validity period was established and the first RM batch was released.Conclusion On the basis of conducted studies, the RM type for magnetic properties of NdFeB alloy-based hard magnetic materials was approved (MS NdFeB set). The developed RM set was registered under the numbers GSO 11059–2018 / GSO 11062–2018 in the State RM Register of the Russian Federation.

‘Exchange spring’ behavior in nanocomposite hard magnetic materials

1996 ◽  
Vol 152 (3) ◽  
pp. 353-358 ◽  
Author(s):  
I. Panagiotopoulos ◽  
L. Withanawasam ◽  
G.C. Hadjipanayis
Keyword(s):  
Magnetic Materials ◽  
Hard Magnetic Materials ◽  
Exchange Spring

Hard and semi-hard magnetic materials based on cobalt and cobalt alloys

2020 ◽  
Vol 824 ◽  
pp. 153874 ◽  
Author(s):  
Jeotikanta Mohapatra ◽  
Meiying Xing ◽  
Jacob Elkins ◽  
J. Ping Liu
Keyword(s):  
Magnetic Materials ◽  
Cobalt Alloys ◽  
Hard Magnetic Materials
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