scholarly journals Local magnetic moments and intermediate valence state of cerium impurities in ferromagnetic rare‐earth metals

1994 ◽  
Vol 75 (10) ◽  
pp. 6737-6739
Author(s):  
C. E. Leal ◽  
A. Troper
Keyword(s):  
Rare Earth ◽  
Valence State ◽  
Magnetic Moments ◽  
Rare Earth Metals ◽  
Intermediate Valence

General behavior of chalcogenides of rare-earth metals in transition to the intermediate valence state under high pressures

2014 ◽  
Vol 90 (16) ◽  
Author(s):  
O. B. Tsiok ◽  
L. G. Khvostantsev ◽  
A. V. Golubkov ◽  
I. A. Smirnov ◽  
V. V. Brazhkin
Keyword(s):  
Rare Earth ◽  
Valence State ◽  
High Pressures ◽  
Rare Earth Metals ◽  
Intermediate Valence ◽  
General Behavior

Indirect Exchange Coupling of Magnetic Moments in Rare-Earth Metals

1971 ◽  
Vol 3 (3) ◽  
pp. 1025-1033 ◽  
Author(s):  
Lawrence Baylor Robinson ◽  
Lloyd N. Ferguson ◽  
Frederick Milstein
Keyword(s):  
Rare Earth ◽  
Exchange Coupling ◽  
Magnetic Moments ◽  
Rare Earth Metals ◽  
Indirect Exchange

scholarly journals The role of ultrafast magnon generation in the magnetization dynamics of rare-earth metals

2020 ◽  
Vol 6 (39) ◽  
pp. eabb1601 ◽  
Author(s):  
B. Frietsch ◽  
A. Donges ◽  
R. Carley ◽  
M. Teichmann ◽  
J. Bowlan ◽  
...  
Keyword(s):  
Rare Earth ◽  
Spin Dynamics ◽  
Magnetic Moments ◽  
Rare Earth Metals ◽  
Ultrafast Dynamics ◽  
Magnetization Dynamics ◽  
Time Resolved ◽  
Spin Lattice ◽  
Dynamics Simulations

Ultrafast demagnetization of rare-earth metals is distinct from that of 3d ferromagnets, as rare-earth magnetism is dominated by localized 4f electrons that cannot be directly excited by an optical laser pulse. Their demagnetization must involve excitation of magnons, driven either through exchange coupling between the 5d6s-itinerant and 4f-localized electrons or by coupling of 4f spins to lattice excitations. Here, we disentangle the ultrafast dynamics of 5d6s and 4f magnetic moments in terbium metal by time-resolved photoemission spectroscopy. We show that the demagnetization time of the Tb 4f magnetic moments of 400 fs is set by 4f spin–lattice coupling. This is experimentally evidenced by a comparison to ferromagnetic gadolinium and supported by orbital-resolved spin dynamics simulations. Our findings establish coupling of the 4f spins to the lattice via the orbital momentum as an essential mechanism driving magnetization dynamics via ultrafast magnon generation in technically relevant materials with strong magnetic anisotropy.

Valence state at the surface of rare-earth metals

1979 ◽  
Vol 19 (12) ◽  
pp. 6615-6619 ◽  
Author(s):  
Börje Johansson
Keyword(s):  
Rare Earth ◽  
Valence State ◽  
Rare Earth Metals
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