Naslov
Magnetism and magnetoelectric effect in 3D metal-organic perovskites

Autori
Šenjug, Pavla

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, neobjavljeni rad, znanstveni

Skup
Workshop “Transfer to Industry” of COST action MAGNETOFON "Ultrafast opto-magneto-electronics for non-dissipative information technology"

Mjesto i datum
Dresden, Njemačka, 07.06.2022. - 08.06.2022

Vrsta sudjelovanja
Pozvano predavanje

Vrsta recenzije
Podatak o recenziji nije dostupan

Ključne riječi
multiferroics ; metal-organic perovskites ; magnetiic order ; magnetoelectric coupling

Sažetak
Recently, the search of novel magneto-electric multiferroics has extended to the metal-organic perovskite group of materials. Metal-organic perovskites offer large freedom in choosing different components and thereby designing the desired properties. The metal-organic perovskites have ABX3 structure where the metal cations on site B are connected by the organic link anions (X) forming a metal-organic framework in whose cavities another organic cation (A) is situated. The most studied group of metal-organic perovskites have a formate anion (HCOO-) as an organic linker. Ordering of the hydrogen bonds connecting the organic cations to the oxygens in the formate anions is usually responsible for the appearance of ferroelectric/antiferroelectric phase. In this talk I will give a short overview of the known multiferroic and magnetoelectric metal-organic perovskites and present our results on the multiferroic guanidinium copper(II) formate [C(NH2)3]Cu(HCOO)3, which has a canted antiferromagnetic order below 4.6 K and is ferroelectric below ~270 K. Experiments showed that the application of an electric field can affect the magnetization of the sample below the temperature of the magnetic phase transition and application of the magnetic field can influence the electric polarization in the paramagnetic phase. In addition to the interesting magnetoelectric behavior, guanidinium copper (II) formate also shows a large magnetic anisotropy. Wishing for better understanding of the observed magnetic and magnetoelectric behaviour, we are collaborating with other scientists doing the complementary research such as the ab-initio calculations, torque anisotropy measurements, electron spin resonance experiments and neutron diffraction. It would also be interesting to do optical measurements in order to see if there is magnetoelectric response at much higher frequencies making this material a possible choice for the application as a fast magnetoelectric.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

POVEZANOST RADA