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Related Experiment Video

Updated: May 6, 2026

In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions

In Situ SIMS and IR Spectroscopy of Well-defined Surfaces Prepared by Soft Landing of Mass-selected Ions

Published on: June 16, 2014

Chemically induced magnetism in atomically precise gold clusters.

Katla Sai Krishna¹, Pilarisetty Tarakeshwar, Vladimiro Mujica

¹Center for Advanced Microstructures and Devices (CAMD), Louisiana State University Baton Rouge, LA 70806, USA Center for Atomic-Level Catalyst Design, #324, Cain Department of Chemical Engineering Louisiana State University, Baton Rouge, LA, 70803, USA.

Small (Weinheim an Der Bergstrasse, Germany)

|October 24, 2013

Summary

This summary is machine-generated.

Chemically induced magnetism in gold clusters (Au25, Au38, Au55) was investigated. Different clusters exhibited diamagnetic, paramagnetic, and ferromagnetic properties, offering insights into quantum size effects.

Keywords:

Atomically-precise gold clusters DFT calculations SQUID magnetism surface magnetism

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A Simple Method for the Size Controlled Synthesis of Stable Oligomeric Clusters of Gold Nanoparticles under Ambient Conditions

Published on: February 5, 2016

Area of Science:

Materials Science
Quantum Chemistry
Solid State Physics

Background:

Atomically precise gold clusters are emerging materials with unique quantum size effects.
Understanding their magnetic properties is crucial for developing novel electronic and spintronic devices.

Purpose of the Study:

To investigate chemically induced magnetism in ligand-stabilized gold clusters (Au25, Au38, Au55).
To correlate specific cluster structures and ligand environments with observed magnetic behaviors.

Main Methods:

Comparative theoretical calculations and experimental magnetic susceptibility measurements were employed.
Ligand exchange and chemical modification were used to tune cluster properties.

Main Results:

[Au25(PPh3)10(SC12H25)5Cl2](2+) and Au38(SC12H25)24 were found to be diamagnetic.
Au25(SC2H4Ph)18 exhibited paramagnetic behavior.
Au55(PPh3)12Cl6 displayed ferromagnetic properties at room temperature.

Conclusions:

The magnetic properties of gold clusters are highly sensitive to their size, ligand shell, and chemical environment.
These findings pave the way for designing gold-based nanomaterials with tailored magnetic functionalities.