High-pressure structural and transport studies of orthorhombic Sm2Ru3Ge5 compound

被引：0

作者：

Sokkalingam, Rajkumar ^{[1
,2
]}

Lingannan, Govindaraj ^{[1
]}

Sundaramoorthy, Muthukumaran ^{[1
,2
]}

Kuo, C. N. ^{[3
,4
]}

Lue, C. S. ^{[3
,4
]}

Sonachalam, Arumugam ^{[1
,2
,5
]}

Joseph, Boby ^{[2
]}

机构：

[1] Bharathidasan Univ, Ctr High Pressure Res, Sch Phys, Tiruchirappalli 620024, India

[2] Elettra Sincrotrone Trieste SCpA, S-S 14,Km 163-5 Area Sci Pk, I-34149 Basovizza, Italy

[3] Natl Cheng Kung Univ, Dept Phys, Tainan 70101, Taiwan

[4] Natl Sci & Technol Council, Taiwan Consortium Emergent Crystalline Mat, Taipei 10601, Taiwan

[5] Tamil Nadu Open Univ, Chennai 600015, India

来源：

SCRIPTA MATERIALIA | 2024年 / 244卷

关键词：

High-pressure powder diffraction; High-pressure Raman spectroscopy; coexistence of CDW and AFM; U2Co3Si5 type orthorhombic Sm2Ru3Ge5; CHARGE-DENSITY-WAVE; RE2RU3GE5; RE; SUPERCONDUCTIVITY; MAGNETISM; ORDER;

D O I：

10.1016/j.scriptamat.2024.115999

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report the results from high-pressure (HP) studies on orthorhombic U2Co3Si5-structure type Sm2Ru3Ge5 compound. HP synchrotron X-ray powder diffraction revealed a smooth reduction in the unit -cell volume up to9 GPa which can be well described by a second -order Birch-Murnaghan equation providing the bulk modulus of the system to be - 147 GPa. This system is found to have several Raman modes below 360 cm -1 all of which show a hardening with pressure up to9 GPa. Thus, there is no symmetry changing structural phase transitions in this system up to9 GPa. The electrical resistivity under HP up to 3 GPa revealed that with increasing pressure, the anomaly related to the charge density wave transition shifted continuously to lower temperatures. In contrast, with increasing pressure, the anomaly associated with the antiferromagnetic transition at - 7 K shows no detectable change.

引用

页数：6

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