Related Experiment Video
Updated: Mar 11, 2026

Methods of Ex Situ and In Situ Investigations of Structural Transformations: The Case of Crystallization of Metallic Glasses
Published on: June 7, 2018
Subshell Stability in Superatomic Clusters and the Formation of Stable Magnetic Motifs
Deepak Kumar1, Arthur C Reber1, Shiv N Khanna1
1Physics Department, Virginia Commonwealth University, Richmond, Virginia 23284-2000, United States.
Clusters with half-filled quantum shells show enhanced stability, enabling the creation of magnetic species. This discovery paves the way for designing novel magnetic nanoassemblies with adjustable properties.
Area of Science:
- Quantum physics
- Materials science
- Nanotechnology
Background:
- Symmetric clusters organize quantum states into shells, with filled shells conferring enhanced stability.
- The stability and properties associated with half-filled shells remain largely unexplored in cluster science.
Purpose of the Study:
- To investigate the energetic stability of clusters with half-filled quantum shells.
- To explore the potential of half-filled shells in forming magnetic species and nanoassemblies.
Main Methods:
- Analysis of various cluster types to assess stability.
- Examination of electronic structures to identify magnetic properties arising from subshell configurations.
Main Results:
- Demonstrated that half-filled shells significantly enhance the energetic stability of clusters.
- Showcased the formation of stable magnetic species through subshells with different quantum numbers.
Conclusions:
- Half-filled shells offer a new pathway to enhanced cluster stability.
- Stable magnetic units formed from half-filled subshells enable the development of tunable magnetic nanoassemblies with controlled magnetic anisotropy.
Related Concept Videos
Atomic Nuclei: Nuclear Spin State Overview
Atomic Nuclei: Nuclear Magnetic Moment
Atomic Nuclei: Nuclear Relaxation Processes
Valence Bond Theory
Colors and Magnetism
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
Nuclear Stability
To hold positively charged protons together...

