The exchange-spring magnet: a new material principle for permanent magnets

1991 ◽  
Vol 27 (4) ◽  
pp. 3588-3560 ◽  
Author(s):  
E.F. Kneller ◽  
R. Hawig
Keyword(s):  
Permanent Magnets ◽  
Exchange Spring ◽  
New Material

scholarly journals Cluster-assembled exchange-spring nanocomposite permanent magnets

2005 ◽  
Vol 97 (10) ◽  
pp. 10K310 ◽  
Author(s):  
X. Rui ◽  
Z. G. Sun ◽  
Y. Xu ◽  
D. J. Sellmyer ◽  
J. E. Shield
Keyword(s):  
Permanent Magnets ◽  
Exchange Spring

Physical Properties of Bonded Nanocomposite Type Hard-Soft Magnets

2011 ◽  
Vol 672 ◽  
pp. 84-87
Author(s):  
Eugen Dorolti ◽  
Alex Todoran ◽  
Maria Simona Gutoiu ◽  
Albert Flavius Takacs ◽  
Ionel Chicinaş ◽  
...  
Keyword(s):  
Composite Material ◽  
Magnetic Fields ◽  
Physical Properties ◽  
Mechanical Milling ◽  
Permanent Magnets ◽  
Magnetic Characteristics ◽  
Magnetic Powder ◽  
Processing Conditions ◽  
Soft Magnets ◽  
Exchange Spring

The exchange spring magnetic powders of SmCo5/α-Fe were obtained by mechanical milling and annealing. SmCo5+20 wt% α-Fe powder milled for 8 h and annealed at about 550 °C was considered to be more appropriate for our purpose. The isotropic nanocomposite permanent magnets were obtained by bonding the magnet powder in a binder matrix. Several ratios from 0.5 to 1.5 wt % between binder and magnetic powder were used. The composite material was compacted in dies at pressure from 600 to 800 MPa. The heat treatments for polymerisation were performed at 180 °C for 1h. The density and the microstructure of the magnets are discussed in connection with the properties of the starting powder and processing conditions. Magnetic characteristics of Br, Hc and (BH)max were obtained from hysteresis curves in magnetic fields up to 10 T.

Experimental and micromagnetic first-order reversal curves analysis in NdFeB-based bulk “exchange spring”-type permanent magnets

2007 ◽  
Vol 316 (2) ◽  
pp. 177-180 ◽  
Author(s):  
Horia Chiriac ◽  
Nicoleta Lupu ◽  
Laurentiu Stoleriu ◽  
Petronel Postolache ◽  
Alexandru Stancu
Keyword(s):  
Permanent Magnets ◽  
First Order ◽  
Exchange Spring ◽  
Spring Type

scholarly journals Magnetic reversal in three-dimensional exchange-spring permanent magnets

2006 ◽  
Vol 99 (8) ◽  
pp. 08B508 ◽  
Author(s):  
J. E. Shield ◽  
J. Zhou ◽  
S. Aich ◽  
V. K. Ravindran ◽  
R. Skomski ◽  
...  
Keyword(s):  
Permanent Magnets ◽  
Three Dimensional ◽  
Magnetic Reversal ◽  
Exchange Spring

Improving exchange-spring nanocomposite permanent magnets

2004 ◽  
Vol 85 (22) ◽  
pp. 5293-5295 ◽  
Author(s):  
J. S. Jiang ◽  
J. E. Pearson ◽  
Z. Y. Liu ◽  
B. Kabius ◽  
S. Trasobares ◽  
...  
Keyword(s):  
Permanent Magnets ◽  
Exchange Spring

scholarly journals High-energy product exchange-spring FePt/Fe cluster nanocomposite permanent magnets

2006 ◽  
Vol 305 (1) ◽  
pp. 76-82 ◽  
Author(s):  
X. Rui ◽  
J.E. Shield ◽  
Z. Sun ◽  
L. Yue ◽  
Y. Xu ◽  
...  
Keyword(s):  
Permanent Magnets ◽  
High Energy ◽  
Energy Product ◽  
Exchange Spring

Cd2-W - a new material for permanent magnets?

1985 ◽  
Vol 90 (2) ◽  
pp. K171-K174 ◽  
Author(s):  
N. Suárez ◽  
J. L. Sánchez ◽  
S. García
Keyword(s):  
Permanent Magnets ◽  
New Material

The Elements of Magnetics

2013 ◽  
Vol 1492 ◽  
pp. 35-46 ◽  
Author(s):  
Steve Constantinides
Keyword(s):  
Energy Production ◽  
Permanent Magnets ◽  
Material Selection ◽  
Point Of View ◽  
Raw Material ◽  
Product Price ◽  
Material Supply ◽  
Production And Consumption ◽  
New Material ◽  
Government Legislation

ABSTRACTThe 20th century saw rapid and dramatic improvements in permanent magnet materials. It has been 31 years since the discovery of neodymium-iron-boron and numerous companies and laboratories are seeking to produce a new and superior material. Topics discussed herein are material options, economics of selected materials and market drivers in material selection. Market issues include manufacturability by shape, size, and material yield; raw material supply including cost and dependability of the supply chain; raw material and magnet product price stability; development of applications based on commercial needs, government legislation and consumer demand. “Need is the mother of invention” and no discussion would be complete without covering why a new material would be beneficial from an applications point of view especially in energy production and consumption. Therefore, an introduction will be provided for select, major applications using permanent magnets and the growth forecasts for these.

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