Abstract
The rare-earth perovskite TbScO3 has been widely used as a substrate for the growth of epitaxial ferroelectric and multiferroic thin films, while its detailed low-temperature magnetic properties were rarely reported. In this paper, we performed detailed magnetization, specific heat, and single crystal neutron scattering measurements, along with the crystalline electric field calculations to study the low-temperature magnetic properties of TbScO3. All our results suggest the magnetic Tb3+ has an Ising-like pseudo-doublet ground state at low temperatures. Due to the constrain of local point symmetry, these Tb3+ Ising moments are confined in the ab plane with a tilt angle of φ=±48o to the a axis. In zero field, the system undergoes an antiferromagnetic phase transition at TN=2.53 K, and forms a GxAy noncollinear magnetic structure below TN. We find the dipole-dipole interactions play an important role to determine the magnetic ground state, which are also responsible for the quasi-one-dimensional magnetism in TbScO3. The significant anisotropic diffuse scatterings further confirm the quasi-one-dimensional magnetism along the c axis. The magnetic phase diagram with the field along the easy b axis is well established. In addition to the GxAy antiferromagnetic state, there is an exotic field-induced phase emerged near the critical field Bc≃0.7 T, where three-dimensional magnetic order is suppressed but strong one-dimensional correlations may still exist.
| Original language | English |
|---|---|
| Article number | 034401 |
| Journal | Physical Review Materials |
| Volume | 7 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 2023 |
Funding
We would like to thank Z. T. Wang for the useful discussions, and G. Davidson for the great support throughout the experiment on Pelican. The authors would also like to acknowledge the beam time awarded by ANSTO through the Proposal No. P9457. The research was supported by the National Key Research and Development Program of China (Grant No. 2021YFA1400400), the National Natural Science Foundation of China (Grants No. 12134020, No. 11974157, No. 12174175, No. 12004426, No. 12005243, and No. 12104255), Shenzhen Fundamental Research Program (Grant No. JCYJ20220818100405013), the Guangdong Basic and Applied Basic Research Foundation (Grant No. 2021B1515120015 and No. 2022B1515120014), Shenzhen Key Laboratory of Advanced Quantum Functional Materials and Devices (Grant No. ZDSYS20190902092905285), the National Key Scientific Instrument and Equipment Development Project of NSFC (Grant No. 11227906), and the Shenzhen Science and Technology Program (Grant No. KQTD20200820113047086). The Major Science and Technology Infrastructure Project of Material Genome Big-science Facilities Platform supported by Municipal Development and Reform Commission of Shenzhen. A.P. acknowledges the support by the Scientific User Facilities Division, Office of Basic Energy Sciences, US Department of Energy.
