Rare-earth orbital moment contributions to the magnetic anisotropy in magnetostrictive Tb0.3Dy0.7Fe2

2021 ◽  
Vol 118 (16) ◽  
pp. 162401
Author(s):  
Paymon Shirazi ◽  
Taehwan Lee ◽  
Mohanchandra K. Panduranga ◽  
Alpha T. N'Diaye ◽  
Anthony Barra ◽  
...  
Keyword(s):  
Rare Earth ◽  
Magnetic Anisotropy ◽  
Orbital Moment

scholarly journals Intrinsically weak magnetic anisotropy of cerium in potential hard-magnetic intermetallics

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Anna Galler ◽  
Semih Ener ◽  
Fernando Maccari ◽  
Imants Dirba ◽  
Konstantin P. Skokov ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Magnetic Anisotropy ◽  
High Performance ◽  
Kondo Effect ◽  
Quantitative Description ◽  
Many Body ◽  
Heavy Rare Earth Elements ◽  
Fe Intermetallics ◽  
Full Temperature

AbstractCerium-based intermetallics are currently attracting much interest as a possible alternative to existing high-performance magnets containing scarce heavy rare-earth elements. However, the intrinsic magnetic properties of Ce in these systems are poorly understood due to the difficulty of a quantitative description of the Kondo effect, a many-body phenomenon where conduction electrons screen out the Ce-4f moment. Here, we show that the Ce-4f shell in Ce–Fe intermetallics is partially Kondo screened. The Kondo scale is dramatically enhanced by nitrogen interstitials suppressing the Ce-4f contribution to the magnetic anisotropy, in striking contrast to the effect of nitrogenation in isostructural intermetallics containing other rare-earth elements. We determine the full temperature dependence of the Ce-4f single-ion anisotropy and show that even unscreened Ce-4f moments contribute little to the room-temperature intrinsic magnetic hardness. Our study thus establishes fundamental constraints on the potential of cerium-based permanent magnet intermetallics.

Giant magnetic anisotropy of rare-earth adatoms and dimers adsorbed by graphene oxide

2017 ◽  
Vol 19 (20) ◽  
pp. 13245-13251 ◽  
Author(s):  
Kai-Cheng Zhang ◽  
Yong-Feng Li ◽  
Yong Liu ◽  
Yan Zhu ◽  
Li-Bin Shi
Keyword(s):  
Graphene Oxide ◽  
Rare Earth ◽  
Electric Field ◽  
Magnetic Anisotropy ◽  
The Rare Earth

The rare-earth dimers adsorbed onto graphene oxide possess huge magnetic anisotropy which can be effectively tuned by electric field.

scholarly journals Strongly Exchange Coupled Core|Shell Nanoparticles with High Magnetic Anisotropy: A Strategy toward Rare-Earth-Free Permanent Magnets

2016 ◽  
Vol 28 (12) ◽  
pp. 4214-4222 ◽  
Author(s):  
E. Lottini ◽  
A. López-Ortega ◽  
G. Bertoni ◽  
S. Turner ◽  
M. Meledina ◽  
...  
Keyword(s):  
Rare Earth ◽  
Magnetic Anisotropy ◽  
Permanent Magnets ◽  
Core Shell ◽  
Shell Nanoparticles ◽  
Core Shell Nanoparticles

scholarly journals Electronic Structure and Magnetic Anisotropy of Single-Layer Rare-Earth Oxybromide

ACS Omega ◽  
2020 ◽  
Vol 5 (23) ◽  
pp. 14194-14201 ◽  
Author(s):  
Yuan-Kai Xu ◽  
Hongxing Li ◽  
Bin-Guang He ◽  
Zi-Peng Cheng ◽  
Wei-Bing Zhang
Keyword(s):  
Electronic Structure ◽  
Rare Earth ◽  
Magnetic Anisotropy ◽  
Single Layer
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