Magnetic order in the chemically substituted frustrated antiferromagnet CsCrF4

被引：2

作者：

Hayashida, Shohei ^{[1
]}

Hagihala, Masato ^{[1
,2
]}

Avdeev, Maxim ^{[3
,4
]}

Miura, Yoko ^{[5
]}

Manaka, Hirotaka ^{[6
]}

Masuda, Takatsugu ^{[1
,7
]}

机构：

[1] Univ Tokyo, Inst Solid State Phys, Kashiwa, Chiba 2778581, Japan

[2] High Energy Accelerator Res Org, Inst Mat Struct Sci, Neutron Sci Div, Tsukuba, Ibaraki 3050801, Japan

[3] Australian Nucl Sci & Technol Org, New Illawarra Rd, Lucas Heights, NSW 2234, Australia

[4] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia

[5] Suzuka Natl Coll Technol, Suzuka, Mie 5100294, Japan

[6] Kagoshima Univ, Grad Sch Sci & Engn, Korimoto, Kagoshima 8900065, Japan

[7] Univ Tokyo, Transscale Quantum Sci Inst, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW B | 2020年 / 102卷 / 17期

基金：

日本学术振兴会;

关键词：

The effect of chemical substitution on the ground state of the geometrically frustrated antiferromagnet CsCrF4 has been investigated through a neutron powder diffraction experiment. Magnetic Fe-substituted CsCr0.94Fe0.06F4 and nonmagnetic Al-substituted CsCr0.98Al0.02F4 samples are measured, and magnetic Bragg peaks are clearly observed in both samples. Magnetic structure analysis revealed a 120° structure having a magnetic propagation vector kmag=(0,0,1/2) in CsCr0.94Fe0.06F4. For CsCr0.98Al0.02F4, a quasi-120° structure having kmag=(1/2,0,1/2) is formed. It is notable that the identified magnetic structure in CsCr0.94Fe0.06F4 belongs to a different phase of ground states from those in CsCr0.98Al0.02F4 and the parent CsCrF4. These results suggest that the Fe substitution strongly influences the ground state of CsCrF4. © 2020 American Physical Society;

D O I：

10.1103/PhysRevB.102.174440

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of chemical substitution on the ground state of the geometrically frustrated antiferromagnet CsCrF4 has been investigated through a neutron powder diffraction experiment. Magnetic Fe-substituted CsCr0.94Fe0.06F4 and nonmagnetic Al-substituted CsCr0.98Al0.02F4 samples are measured, and magnetic Bragg peaks are clearly observed in both samples. Magnetic structure analysis revealed a 120 degrees structure having a magnetic propagation vector k(mag) = (0, 0, 1/2) in CsCr0.94Fe0.06F4. For CsCr0.98Al0.02F4, a quasi-120 degrees structure having k mag = (1/2, 0, 1/2) is formed. It is notable that the identified magnetic structure in CsCr0.94Fe0.06F4 belongs to a different phase of ground states from those in CsCr0.98Al0.02F4 and the parent CsCrF4. These results suggest that the Fe substitution strongly influences the ground state of CsCrF4.

引用

页数：6

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