High-temperature magnetoelectricity of terbium aluminum borate: The role of excited states of the rare-earth ion

被引：26

作者：

Kadomtseva, A. M. ^{[1
]}

Popov, Yu. F. ^{[1
]}

Vorob'ev, G. P. ^{[1
]}

Kostyuchenko, N. V. ^{[2
,3
]}

Popov, A. I. ^{[2
,4
]}

Mukhin, A. A. ^{[2
]}

Ivanov, V. Yu. ^{[2
]}

Bezmaternykh, L. N. ^{[5
]}

Gudim, I. A. ^{[5
]}

Temerov, V. L. ^{[5
]}

Pyatakov, A. P. ^{[1
,2
]}

Zvezdin, A. K. ^{[2
,3
]}

机构：

[1] Moscow MV Lomonosov State Univ, MSU, Dept Phys, Moscow 119992, Russia

[2] Russian Acad Sci, Prokhorov Gen Phys Inst, Moscow, Russia

[3] State Univ, Moscow Inst Phys & Technol, Moscow, Russia

[4] Natl Res Univ Elect Technol MIET, Zelenograd, Russia

[5] RAS, LV Kirensky Phys Inst, Siberian Branch, Krasnoyarsk 660036, Russia

来源：

PHYSICAL REVIEW B | 2014年 / 89卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

PRFE3(BO3)(4);

D O I：

10.1103/PhysRevB.89.014418

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Recently discovered magnetoelectricity in the rare-earth aluminum borates RAl3(BO3)(4) has attracted attention due to the large values of magnetoinduced electric polarization. We have observed for the first time the magnetoelectric polarization in TbAl3(BO3)(4) exhibiting anomalous temperature dependence: an electric polarization induced by in-plane magnetic field (P parallel to a, H perpendicular to c axis) which is small at low temperatures (4 K), remarkably increases by almost an order of magnitude at high temperatures (150-300 K). The observed nonmonotonic temperature behavior of the field-induced polarization, including a change of sign at similar to 65-70 K, is attributed to the competition of the ground and excited crystal-field states of Tb3+ ions. Quantum theory analysis, involving the combination of analytical and numerical methods, has enabled us to quantitatively describe the observed magnetic and magnetoelectric properties of TbAl3(BO3)(4).

引用

页数：6

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