Details

Autor(en) / Beteiligte

• Zhang, Jing
• Su, Na
• Mi, Xinrun
• Pi, Maocai
• Zhou, Haidong
• Cheng, Jinguang
• Chai, Yisheng

Titel

Probing magnetic symmetry in antiferromagnetic Fe4 Nb2 O9 single crystals by linear magnetoelectric tensor

Ist Teil von

• Physical review. B, 2021-04, Vol.103 (14)

Ort / Verlag

College Park: American Physical Society

Erscheinungsjahr

2021

Quelle

APS_美国物理学会期刊

Beschreibungen/Notizen

• In the present study, we investigated magnetodielectric, magnetoelectric (ME), and angular-dependent polarization in single-crystal Fe4 Nb2 O9. The magnetodielectric effects in ɛx(x / /[100]), ɛy(y//[120]), and ɛz(z//[001]) are found to be significant only around TN ≈ 95 K when magnetic fields are applied along three orthogonal x-, y-(y//[120]), and z directions. The finite polarization Px, Py, and Pz of 70, 100, and 30 μC/m2, respectively, can be induced in the antiferromagnetic phase when a finite magnetic field up to 9 T is applied along the three orthogonal directions. The angular-dependent polarization measurements verify the dominating linear ME effects below TN. From the above experimental results, a linear ME tensor aij with all nine nonzero components can be inferred, demonstrating a much lower magnetic point group of −1′ for the canted antiferromagnetic configuration.