Coexistence of the magnetically ordered and Haldane states in (Y1-xNdx)2BaNiO5

Author:

Popova Elena,Klimin Sergei,Popova Marina,Klingeler RÜdiger,BÜchner Bernd,Vasiliev Alexander

Abstract

The magnetic properties of (Y1-xNdx)2BaNiO5 with x = 0.01, 0.02, 0.03, 0.04, and 0.05 are investigated by means of specific heat, magnetic susceptibility, and spectroscopic measurements. We estimate a magnetic contribution of the neodymium subsystem into the magnetic susceptibility and specific heat using temperature dependencies of the splitting of the ground Kramers doublet of the Nd3+ ion obtained from spectroscopic experiments. We estimate also the contribution caused by nickel chain breaks and by ferrons. Different scenarios of low-temperature magnetic behavior are discussed.

Publisher

EDP Sciences

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