Absence of exchange interaction between localized magnetic moments and conduction-electrons in diluted Er3+ gold-nanoparticles

2014 ◽  
Vol 115 (17) ◽  
pp. 17E128
Author(s):  
G. G. Lesseux ◽  
W. Iwamoto ◽  
A. F. García-Flores ◽  
R. R. Urbano ◽  
C. Rettori
Keyword(s):  
Gold Nanoparticles ◽  
Exchange Interaction ◽  
Magnetic Moments ◽  
Conduction Electrons

Absence of Exchange Interaction Between Localized Magnetic Moments and Conduction-Electrons in Magnetic Ions Diluted in Ag-Nanoparticles

2011 ◽  
Vol 11 (3) ◽  
pp. 2126-2131 ◽  
Author(s):  
J. M. Vargas ◽  
W. Iwamoto ◽  
L. M. Holanda ◽  
S. B. Oseroff ◽  
P. G. Pagliuso ◽  
...  
Keyword(s):  
Exchange Interaction ◽  
Ag Nanoparticles ◽  
Magnetic Moments ◽  
Conduction Electrons ◽  
Magnetic Ions

scholarly journals Синтез, структура и магнитные свойства многослойных наногетероструктур Fe|MgO|Cr|MgO|Fe

2021 ◽  
Vol 63 (9) ◽  
pp. 1306
Author(s):  
Е.М. Якунина ◽  
Е.А. Кравцов ◽  
Yu.N. Khaydukov ◽  
Н.О. Антропов ◽  
В.В. Проглядо
Keyword(s):  
Magnetic Properties ◽  
High Resolution ◽  
Exchange Interaction ◽  
Magnetic Moments ◽  
Ferromagnetic Material ◽  
Structural Studies ◽  
X Ray ◽  
Structural And Magnetic Properties ◽  
Metal Layers

Layered nanoheterostructures Fe | MgO | Cr | MgO | Fe is an artificial ferromagnetic material in which the exchange interaction of the magnetic moments of Fe layers through intermediate dielectric and metal layers can lead to magnetic configurations that are not realized in the well-studied Fe | MgO | Fe and Fe | Cr | Fe. In this work, we investigated the correlations of the structural and magnetic properties of layered nanoheterostructures Fe (10 nm) | MgO (1.5 nm) | Cr (t nm) | MgO (1.5 nm) | Fe (7 nm) (thickness t = 0.9 and 1.8 nm). Structural studies performed using X-ray diffractometry and high-resolution reflectometry confirmed the formation of a textured structure and revealed its well-defined layered character with sharp interlayer boundaries.

Intrinsic magnetic moments of gold nanoparticles

2011 ◽  
Vol 83 (17) ◽  
Author(s):  
Chi-Yen Li ◽  
Chun-Ming Wu ◽  
Sunil K. Karna ◽  
Chin-Wei Wang ◽  
Daniel Hsu ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Magnetic Moments

Rare earth-rhodium-plumbides RE2Rh2Pb with RE = La–Nd, Sm, Gd and Tb

2018 ◽  
Vol 73 (12) ◽  
pp. 1015-1021 ◽  
Author(s):  
Lukas Heletta ◽  
Rainer Pöttgen
Keyword(s):  
Room Temperature ◽  
Magnetic Moments ◽  
Induction Melting ◽  
Temperature Dependent ◽  
X Ray ◽  
Conduction Electrons ◽  
Paramagnetic Behavior ◽  
Arc Melting ◽  
Intergrowth Structures

AbstractThe plumbides RE2Rh2Pb (RE = La–Nd, Sm, Gd, Tb) were synthesized in sealed niobium ampoules by induction melting of the pure elements or directly via arc-melting. The characterization of the samples by X-ray powder diffraction confirmed their Mo2B2Fe-type structure (space group P4/mbm) at room temperature. The Sm2Rh1.924Pb structure was refined from single-crystal X-ray diffractometer data: a=760.02(5), c=378.20(3) pm, wR=0.0387, 292 F2 values, 13 variables. The rhodium site shows small defects. The RE2Rh2Pb plumbides are simple 1:1 intergrowth structures of AlB2 and CsCl related slabs of compositions RERh2 and REPb. The Rh2 dumbbell in the SmRh2 slab of Sm2Rh2Pb shows a Rh–Rh distance of 281 pm. Temperature-dependent magnetic susceptibility measurements of La2Rh2Pb, Pr2Rh2Pb and Nd2Rh2Pb showed that the rhodium atoms carry no localized magnetic moments. La2Rh2Pb exhibits Pauli-paramagnetic behavior induced by the conduction electrons. The ground state of the praseodymium compound is ferromagnetic below TC=3.3 K while the neodymium compound shows a transition to an antiferromagnetic state at TN=6.1 K and a metamagnetic transition at a critical field of ca. 1000 Oe.

LuGd: A system exhibiting positive exchange coupling between conduction electrons and localised magnetic moments

1978 ◽  
Vol 49 (3) ◽  
pp. 1440-1442 ◽  
Author(s):  
R. W. Cochrane ◽  
J. O. Ström‐Olsen ◽  
Gwyn Williams
Keyword(s):  
Exchange Coupling ◽  
Magnetic Moments ◽  
Conduction Electrons
Sign in / Sign up

Export Citation Format

Share Document