Emergence of metamagnetic transition, re-entrant cluster glass and spin phonon coupling in Tb2CoMnO6

被引：16

作者：

Anand, Khyati ^{[1
]}

Pal, Arkadeb ^{[1
]}

Alam, Mohd. ^{[1
]}

Dan, Sambhab ^{[1
]}

Kumar, Shiv ^{[2
]}

Ghosh, Surajit ^{[1
]}

Kumari, Seema ^{[1
]}

Das, A. ^{[3
,4
]}

Sawada, Masahiro ^{[2
]}

Mohan, Anita ^{[1
]}

Sathe, Vasant G. ^{[5
]}

Chatterjee, Sandip ^{[1
]}

机构：

[1] BHU, Indian Inst Technol, Dept Phys, Varanasi 221005, Uttar Pradesh, India

[2] Hiroshima Univ, Hiroshima Synchrotron Radiat Ctr, Kagamiyama 2-313, Higashihiroshima 7390046, Japan

[3] Homi Bhabha Natl Inst, Mumbai 400094, Maharashtra, India

[4] Bhabha Atom Res Ctr, Div Solid State Phys, Mumbai 400085, Maharashtra, India

[5] UGC DAE Consortium Sci Res, Univ Campus,Khandwa Rd, Indore 452001, Madhya Pradesh, India

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2021年 / 33卷 / 27期

关键词：

metamagnetism; spin glass; spin frustration; spin phonon coupling; phonon modes; electronic structure; BEHAVIOR;

D O I：

10.1088/1361-648X/abfe94

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The double perovskite compound Tb2CoMnO6 has been investigated using x-ray absorption spectroscopy (XAS), Raman spectroscopy, magnetic measurements and ab initio band structure calculations. It is observed that both anti-ferromagnetic (AFM) and ferromagnetic (FM) phase coexist in this material. The presence of anti-site disorder (ASD) has been established from the analysis of neutron diffraction data. Moreover, a prominent metamagnetic transition is observed in the M(H) behavior that has been explained with the drastic reorientation of the pinned domain which are aligned antiparallel by the antiphase boundaries (APBs) at zero field. The ASD further gives rise to spin frustration at low temperature which leads to the re-entrant cluster glass similar to 33 K. The coupling between phononic degree of freedom and spin in the system has also been demonstrated. It is observed that the theoretical calculation is consistent with that of the experimentally observed behavior.

引用

页数：10

共 44 条

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