Impurity-induced moment freezing in NaFexRu1-xO2

被引：0

作者：

Avidor, Alon Hendler ^{[1
]}

Ortiz, Brenden R. ^{[1
,2
]}

Sarte, Paul M. ^{[1
]}

Zhang, Qiang ^{[3
]}

Wilson, Stephen D. ^{[1
]}

机构：

[1] Univ Calif Santa Barbara, Mat Dept, Santa Barbara, CA 93106 USA

[2] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA

[3] Oak Ridge Natl Lab, Neutron Scattering Div, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW MATERIALS | 2025年 / 9卷 / 02期

关键词：

VOGEL-FULCHER LAW; MAGNETIC-PROPERTIES; TRIANGULAR-LATTICE; SURFACE; STATE;

D O I：

10.1103/PhysRevMaterials.9.024404

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the impact of magnetic impurity substitution on the quantum disordered magnetic ground state of NaRuO2. Local S = 5/2 moments are introduced into the frustrated triangular lattice of Jeff = 1/2 Ru moments via Fe substitution in NaFexRu1-xO2, and the evolution of the magnetic ground state is reported. Local spin freezing associated with conventional spin-glass behavior is observed upon Fe substitution, marking an impurity-induced freezing of the primarily dynamic magnetic ground state in NaRuO2. Furthermore, local Fe moments induce a Curie-Weiss magnetic behavior in the uniform magnetic susceptibility, and the local moment magnitude is best described by dynamic Ru moments polarized about impurity sites. Our results establish an impurity-doping phenomenology consistent with inherently dynamic moments in NaRuO2 that are pinned by local magnetic impurities, similar to "swiss cheese" models of impurity-substituted copper oxides.

引用

页数：7

共 43 条

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