Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

π Electron Effects on Chemical Shift: Overview

π Electron Effects on Chemical Shift: Overview

An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0, resulting in...

Bonding in Metals

Bonding in Metals

Metallic bonds are formed between two metal atoms. A simplified model to describe metallic bonding has been developed by Paul Drüde called the “Electron Sea Model”.

Directionality of Nuclear Transport

Directionality of Nuclear Transport

Ras-related nuclear protein or Ran is a small G protein that cycles between its GTP and GDP bound states. Ran specific regulators, a Ran GTPase Activating Protein or RanGAP present in the cytosol and a Ran guanine nucleotide exchange factor or RanGEF present inside the nucleus regulate GTP/GDP exchange. A high concentration of GTP inside the cells, in addition to this asymmetric distribution of Ran-specific regulators, leads to a higher RanGTP concentration inside the nucleus. This...

Chemical Shift: Internal References and Solvent Effects

Chemical Shift: Internal References and Solvent Effects

In an NMR sample, precise measurement of the absolute absorption frequencies of nuclei is difficult. A standard internal reference compound is added, and the frequency difference between the reference signal and sample signals is measured.
The internal reference compound generally used in NMR spectroscopy is tetramethylsilane (TMS). TMS is preferred because it is chemically inert, soluble in NMR solvents, and easily removable. Also, the highly shielded methyl protons in TMS yield an intense...

Electron Orbital Model

Electron Orbital Model

Orbitals are the areas outside of the atomic nucleus where electrons are most likely to reside. They are characterized by different energy levels, shapes, and three-dimensional orientations. The location of electrons is described most generally by a shell or principal energy level, then by a subshell within each shell, and finally, by individual orbitals found within the subshells.
The first shell is closest to the nucleus, and it has only one subshell with a single spherical orbital called the...

Biasing of Metal-Semiconductor Junctions

Biasing of Metal-Semiconductor Junctions

Biasing metal-semiconductor junctions involves applying a voltage across the junction. Specifically, the metal is connected to a voltage source, while the semiconductor is grounded. This technique is essential for controlling the direction and magnitude of current flow in electronic devices, including diodes, transistors, and photovoltaic cells.
In Schottky junctions, where the semiconductor is n-type, applying a positive voltage to the metal relative to the semiconductor reduces its Fermi...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Tuning field amplitude to minimise heat-loss variability in magnetic hyperthermia.

Nanoscale advances·2026

Same author

Dichroism of coupled multipolar plasmonic modes in twisted triskelion stacks.

Nanophotonics (Berlin, Germany)·2025

Same author

Size-dependent antiferromagnetism and direct observation of Néel axes in NiO nanoparticles.

Nanoscale·2025

Same author

Understanding magnetic hyperthermia performance within the "Brezovich criterion": beyond the uniaxial anisotropy description.

Nanoscale·2024

Same author

Unveiling the crystal and magnetic texture of iron oxide nanoflowers.

Nanoscale·2024

Same author

Imaging of Antiferroelectric Dark Modes in an Inverted Plasmonic Lattice.

ACS nano·2023

Search research articles

Related Experiment Video

Updated: May 27, 2026

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles

Published on: March 2, 2016

Modelling exchange bias in core/shell nanoparticles.

Oscar Iglesias¹, Xavier Batlle, Amílcar Labarta

¹Departament de Física Fonamental and Institut de Nanociència i Nanotecnologia de la UB (IN2UB), Universitat de Barcelona, Avenida Diagonal 647, 08028 Barcelona, Spain.

Journal of Physics. Condensed Matter : an Institute of Physics Journal

|November 4, 2011

Summary

This summary is machine-generated.

We developed an atomistic model for core/shell nanoparticles, revealing that uncompensated interfacial spins cause magnetic hysteresis loop shifts. This provides new insight into the microscopic origins of observed magnetic phenomena.

More Related Videos

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles

Published on: June 25, 2018

$Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2$

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2

Published on: December 8, 2016

Related Experiment Videos

Last Updated: May 27, 2026

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles

Synthesis, Characterization, and Functionalization of Hybrid Au/CdS and Au/ZnS Core/Shell Nanoparticles

Published on: March 2, 2016

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles

Ligand-Mediated Nucleation and Growth of Palladium Metal Nanoparticles

Published on: June 25, 2018

$Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2$

Studying Soft-matter and Biological Systems over a Wide Length-scale from Nanometer and Micrometer Sizes at the Small-angle Neutron Diffractometer KWS-2

Published on: December 8, 2016

Area of Science:

* Nanotechnology
* Materials Science
* Condensed Matter Physics

Background:

* Core/shell nanoparticles exhibit complex magnetic behaviors.
* Understanding interfacial magnetic properties is crucial for device applications.

Purpose of the Study:

* To develop an atomistic model for core/shell nanoparticles.
* To investigate the microscopic origins of magnetic hysteresis loop shifts.
* To correlate interfacial spin behavior with observed magnetic phenomena.

Main Methods:

* Atomistic modeling of core/shell nanoparticles with tunable parameters.
* Monte Carlo simulations of magnetic hysteresis loops.
* Analysis of interfacial spin magnetic order for varying particle sizes and exchange coupling.

Main Results:

* Determined the range of microscopic parameters for observable field cooling loop shifts.
* Correlated loop asymmetries and vertical displacements with uncompensated interfacial spins.
* Identified pinned interfacial spins as a key factor in magnetic behavior.

Conclusions:

* The atomistic model successfully explains experimental magnetic hysteresis loop phenomenology.
* Uncompensated and pinned interfacial spins are critical for understanding magnetic behavior in core/shell nanoparticles.
* Provides new microscopic insights into nanoparticle magnetism.