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Related Experiment Video

Updated: Dec 1, 2025

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Published on: October 1, 2019

Magnetizing lead-free halide double perovskites.

Weihua Ning¹, Jinke Bao², Yuttapoom Puttisong¹

¹Department of Physics, Chemistry and Biology (IFM), Linköping University, Linköping SE-581 83, Sweden.

Science Advances

|November 7, 2020

Summary

Researchers developed new lead-free double perovskites for spintronics by adding iron. These materials show magnetic properties, paving the way for advanced, low-power electronics.

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Area of Science:

Materials Science
Condensed Matter Physics
Solid State Chemistry

Background:

Spintronics offers potential for high-speed, low-power information technology.
Lead halide perovskites (LHPs) show promise but their spin properties are limited by lead's spin-orbit coupling.
Developing novel magnetic materials is crucial for advancing spintronics.

Purpose of the Study:

To explore a new class of halide perovskites for spintronics applications.
To investigate the magnetic properties of iron-alloyed double perovskites.
To overcome the limitations of lead-based materials in spintronics.

Main Methods:

Alloying magnetic elements into optoelectronic double perovskites.
Synthesizing iron-alloyed double perovskite, Cs2Ag(Bi:Fe)Br6, where Fe3+ substitutes Bi3+.
Characterizing the magnetic response of the synthesized material.

Main Results:

Homogeneous distribution of FeBr6 clusters within the double perovskite crystals.
Observation of a strong temperature-dependent magnetic response below 30 K.
Tentative attribution of the magnetic response to weak ferromagnetic or antiferromagnetic ordering.

Conclusions:

Demonstrated a new approach to create spintronic materials using lead-free double perovskites.
The iron-alloyed double perovskite exhibits promising magnetic properties.
This work encourages further research into lead-free double perovskites for spintronics.