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

Colors and Magnetism

Colors and Magnetism

Color in Coordination Complexes
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...

You might also read

Related Articles

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

Sort by

Same author

Incorporating ambient air pollution as a risk factor for tuberculosis mortality in Delhi, India.

Clinical infectious diseases : an official publication of the Infectious Diseases Society of America·2026

Same author

Removal of Soluble Nitrogen From Surimi Wash Water by Protein Recovery Using Lactic Acid for Safe Discharge.

Journal of food science·2026

Same author

Selection process for recruitment in anaesthesiology: Time to revamp?

Indian journal of anaesthesia·2026

Same author

Beyond adoption: integrating TTAT and user-centric design for mHealth service continuance.

Journal of health organization and management·2026

Same author

Relationship Between Patient State Index and Richmond Agitation Sedation Scale for Sedation in Critically Ill Patients: An Observational Analytical Study.

Turkish journal of anaesthesiology and reanimation·2026

Same author

Resistance-guided isolation and identification of antibiotic-resistant bacteria from bull semen: exploring alternatives to antibiotics in semen extenders.

Tropical animal health and production·2026

Search research articles

Related Experiment Video

Updated: Apr 10, 2026

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

Thickness dependent terahertz emission from cobalt thin films.

Nishant Kumar, Ruud W A Hendrikx, Aurèle J L Adam

|June 16, 2015

Summary

Femtosecond laser pulses generate terahertz (THz) emission from cobalt films. Film thickness dictates whether THz emission depends on in-plane or out-of-plane magnetization, impacting its directionality.

Area of Science:

Condensed Matter Physics
Materials Science
Ultrafast Optics

Background:

Terahertz (THz) pulse emission from magnetic materials is a key phenomenon in spintronics and ultrafast magnetism.
Understanding the relationship between film properties and THz emission characteristics is crucial for developing novel THz sources and devices.
Cobalt thin films are promising candidates for such applications due to their magnetic properties.

Purpose of the Study:

To investigate the influence of cobalt thin film thickness on terahertz (THz) pulse emission characteristics.
To determine the role of in-plane versus out-of-plane magnetization components in THz emission.
To correlate magnetic properties with observed THz emission phenomena.

Main Methods:

Illumination of cobalt thin films with femtosecond laser pulses.

More Related Videos

Author Spotlight: Advancements in High-Performance Thermoelectric Thin Films Through Radio Frequency Magnetron Sputtering

Author Spotlight: Advancements in High-Performance Thermoelectric Thin Films Through Radio Frequency Magnetron Sputtering

Published on: May 17, 2024

Writing and Low-Temperature Characterization of Oxide Nanostructures

Writing and Low-Temperature Characterization of Oxide Nanostructures

Published on: July 18, 2014

Related Experiment Videos

Last Updated: Apr 10, 2026

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

High-resolution Thermal Micro-imaging Using Europium Chelate Luminescent Coatings

Published on: April 16, 2017

Author Spotlight: Advancements in High-Performance Thermoelectric Thin Films Through Radio Frequency Magnetron Sputtering

Author Spotlight: Advancements in High-Performance Thermoelectric Thin Films Through Radio Frequency Magnetron Sputtering

Published on: May 17, 2024

Writing and Low-Temperature Characterization of Oxide Nanostructures

Writing and Low-Temperature Characterization of Oxide Nanostructures

Published on: July 18, 2014

Detection and analysis of emitted terahertz (THz) pulses.

Rotation of the sample about the surface normal to study azimuthal angle dependence.

Magnetic force microscopy (MFM) to characterize film magnetization.

Main Results:

For cobalt films < 40 nm, THz electric field direction rotates with sample rotation (azimuthal angle-dependent), indicating in-plane magnetization influence.
For thicker films (> 40 nm), an azimuthal angle-independent THz emission component emerges, attributed to out-of-plane magnetization.
The contribution of the out-of-plane magnetization component to THz emission increases with film thickness.

Conclusions:

Cobalt thin film thickness is a critical parameter controlling the nature of laser-induced THz emission.
The transition from in-plane to out-of-plane magnetization dominance with increasing thickness directly impacts THz emission anisotropy.
These findings provide insights into the mechanisms of THz generation in magnetic thin films and guide material design for tailored THz emission.