Magnetic biominerals localised in brain tissue: anomalous properties, possible functional role and synthetic analogues

Abstract

Anomalous properties of biogenic magnetic minerals localised in human and animal brain tissues are described. The experiments are performed using a ferrimagnetic resonance technique. It is shown that the ferrimagnetic resonance signals caused by physiogenic and pathogenic magnetic biominerals can be detected in the brain tissues. When the microwave power exceeds a critical value (∼ 80 mW), physiogenic magnetically ordered nanoparticles demonstrate a presence of unique dynamic effects. To our opinion, these effects are associated with transitions of the biogenic magnetic nanoparticles to macroscopic quantum states, which manifest themselves at the room temperature. It is supposed that the physiogenic magnetic biominerals play an important role in the brain functions, while the pathogenic biominerals cause brain diseases. We describe the main principles for development of technologies aimed at creation of synthetic materials with the macroscopic quantum effects occurring at the room temperature. Possible applications of our results for solution of fundamental and applied problems are analysed.