Talk (non-conference) (Invited)

FZJ-2025-04557

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Experimental Studies of 3D Frustrated Magnets

Rathore, I. S.FZJ*

2025

Abstract: Frustrated magnets are a promising class of materials which are being scrutinized for decades in view of their interesting ground states and potential applications [1]. In this context, we investigated the magnetic and thermodynamic properties of two 3D geometrically frustrated magnets using PPMS and SQUID magnetometer measurements. Our goal is to understand the ground state properties of K2Fe2(SO4)3, a Fe2+ based double trillium lattice compound, and Li3Nd3W2O12, a Nd3+ based hyper-Kagome lattice compound.The polycrystalline samples were synthesized using solid-state reactions. The structural and magnetic properties were investigated via X-ray powder diffraction, magnetization, and heat capacity measurements. The K2Fe2(SO4)3 crystallizes in a cubic unit cell with a space group P213. It does not undergo a magnetic transition down to 2 K despite having a Curie-Weiss temperature of 𝛳CW ∼ −21 K. The isothermal magnetization exhibits two field-induced features at 𝐻C1 ∼ 1.61 T and 𝐻C2 ∼ 5.95 T. Preliminary measurements on Li3Nd3W2O12 will also be discussed.Reference:[1] L. Balents, Nature 464, 199 (2010).

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Contributing Institute(s):

1. Streumethoden (JCNS-2)
2. JARA-FIT (JARA-FIT)

Research Program(s):

1. 632 - Materials – Quantum, Complex and Functional Materials (POF4-632) (POF4-632)
2. 6G4 - Jülich Centre for Neutron Research (JCNS) (FZJ) (POF4-6G4) (POF4-6G4)

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