Abstract
Here we report a ferromagnetic compound Ba9V3Te15 with quasi-one-dimensional (1D) spin chains. It was synthesized at high-temperature and high-pressure conditions and systematically investigated via structural, transport, magnetic and heat capacity measurements. Ba9V3Te15 mainly consists of trimerized face-sharing VTe6 octahedral chains running along the c axis, which are separated by a distance of 10.184(8)Å, thus demonstrating a strong 1D structural character. Ba9V3Te15 is a semiconductor with a band gap ∼128meV and undergoes a ferromagnetic transition with TC∼3.6K. Far above TC, the short-range spin orders due to the intrachain spin coupling have developed, which leads to a negative magnetoresistance effect, the deviation of magnetic susceptibility from the Curie-Weiss law and T1/2 dependence of magnetic heat capacity. Our results reveal that Ba9V3Te15 provides a good opportunity to study the intrinsic properties of a system with quasi-1D ferromagnetic spin chains.
| Original language | English |
|---|---|
| Article number | 174423 |
| Journal | Physical Review B |
| Volume | 108 |
| Issue number | 17 |
| DOIs | |
| State | Published - Nov 1 2023 |
Funding
We greatly appreciate the support of the National Key R&D Program of China and the Natural Science Foundation of China under Grants No. 12104488, No. 11974410, No. 12204515, No. 12004161, No. 11974397, No. 11921004, No. 2017YFA0302900, No.11820101003, the Stable Support Plan Program of Shenzhen Natural Science Fund (under Grant No. 20200925152415003), the Project funded by China Postdoctoral Science Foundation (under Grant No. 2022M723355), the Guang dong Basic and Applied Basic Research Foundation of 2022A1515010044. J.Z. and X.Z. also acknowledged the Major Science and Technology Infrastructure Project of Material Genome Big-science Facilities Platform supported by Municipal Development and Reform Commission of Shenzhen. Some experiments are supported by the Synergic Extreme Condition User Facility. The calculation is supported by Center for Computational Science and Engineering of Southern University of Science and Technology.