Metamagnetic transitions and magnetoelectric coupling in acentric and nonpolar Pb2Mn O4

D. Chandrasekhar Kakarla, H. C. Wu, D. J. Hsieh, P. J. Sun, G. J. Dai, Jiunn-Yuan Lin, J. L. Her, Yasuhiro H. Matsuda, L. Z. Deng, M. Gooch, C. W. Chu, H. D. Yang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Acentric and nonpolar Pb2MnO4 was predicted to exhibit unique multipiezo induced magnetoelectric (ME) phenomena. In this paper, we present the results of magnetization as well as dielectric properties as a function of temperature (T), magnetic field (H), pressure (P), and electric field (E) primarily to address the ME coupling and identify the underlying mechanism behind this phenomenon. Magnetization and specific-heat measurements reveal the antiferromagnetic ordering of Mn4+ spins at temperature TN=17K. Metamagnetic transitions at three critical magnetic fields (Hc1, Hc2, and Hc3) are observed for T < TN and H > 3.5 T. Further, the influences of pressure and magnetic field on Hc1 and Hc2 are investigated. The TN, Hc1, and Hc2 all decrease with increasing external pressure. The dielectric anomaly observed at TN is influenced by applying a magnetic field of H > 3.5 T. However, the electric field has minimal influence on the metamagnetic transition. The scaling between dielectric constant and magnetization meaningfully resolves the existence of magnetic-field-induced higher-order ME coupling in Pb2MnO4 at T < TN and H > 3.5 T.

Original languageEnglish
Article number195129
JournalPhysical Review B
Volume99
Issue number19
DOIs
StatePublished - 16 May 2019

Fingerprint Dive into the research topics of 'Metamagnetic transitions and magnetoelectric coupling in acentric and nonpolar Pb2Mn O4'. Together they form a unique fingerprint.

Cite this