Detail publikace

Seemingly anisotropic magnetodielectric effect in isotropic EuTiO3 ceramics

ŘEPČEK, D. KADLEC, C. KADLEC, F. SAVINOV, M. KACHLÍK, M. DRAHOKOUPIL, J. PROSCHEK, P. PROKLEŠKA, J. MACA, K. KAMBA, S.

Originální název

Seemingly anisotropic magnetodielectric effect in isotropic EuTiO3 ceramics

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

In the antiferromagnetic phase of EuTiO3 ceramics, a seemingly anisotropic magnetodielectric effect (up to 2.5%) was observed via the low-frequency dielectric permittivity measured in external magnetic field below 1.9 T. We explain the effect theoretically by taking into account the demagnetizing field which effectively reduces the internal magnetic flux density by 0.6 T when the external magnetic field is applied perpendicular to the plane of the disk-shaped sample. This finding is also confirmed experimentally by magnetization measurements. The refractive index between 0.2 and 0.5 THz exhibits a large anisotropy in an external magnetic field of up to 7 T. This anisotropy is due to a shift of the ferromagnetic resonance from the microwave to the sub-THz region with external magnetic field applied perpendicular to the magnetic component of the THz radiation. This magnon observation is performed in the strong external magnetic field (above 2 T) and in both paramagnetic and antiferromagnetic phases.

Klíčová slova

magnetodielectric effect, magnetoelectrics, THz spectroscopy, IR spectroscopy

Autoři

ŘEPČEK, D.; KADLEC, C.; KADLEC, F.; SAVINOV, M.; KACHLÍK, M.; DRAHOKOUPIL, J.; PROSCHEK, P.; PROKLEŠKA, J.; MACA, K.; KAMBA, S.

Vydáno

1. 10. 2020

Nakladatel

AMER PHYSICAL SOC

Místo

COLLEGE PK

ISSN

2469-9950

Periodikum

PHYSICAL REVIEW B

Ročník

102

Číslo

14

Stát

Spojené státy americké

Strany od

1

Strany do

8

Strany počet

8

URL

https://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=2&SID=C3U1nBBbLhrF9TaVhSc&page=1&doc=1

BibTex

@article{BUT168933,
  author="Dalibor {Řepček} and Christelle {Kadlec} and Filip {Kadlec} and Maxim {Savinov} and Martin {Kachlík} and Jan {Drahokoupil} and Petr {Proschek} and Jan {Prokleška} and Karel {Maca} and Stanislav {Kamba}",
  title="Seemingly anisotropic magnetodielectric effect in isotropic EuTiO3 ceramics",
  journal="PHYSICAL REVIEW B",
  year="2020",
  volume="102",
  number="14",
  pages="1--8",
  doi="10.1103/PhysRevB.102.144402",
  issn="2469-9950",
  url="https://apps.webofknowledge.com/full_record.do?product=WOS&search_mode=GeneralSearch&qid=2&SID=C3U1nBBbLhrF9TaVhSc&page=1&doc=1"
}