Crystal growth and magnetic properties of Nd1-xDyxFe3(BO3)4

TL;DR

This study investigates the crystal growth conditions and magnetic properties of Nd1-xDyxFe3(BO3)4, revealing spontaneous spin-flop transitions due to interactions between rare-earth and Fe subsystems.

Contribution

It provides new insights into the phase stability, growth methods, and magnetic behavior of Nd-Dy iron borates, highlighting the influence of rare-earth interactions on magnetic transitions.

Findings

Spontaneous spin-flop transitions observed in Nd-Dy iron borates.

Growth conditions for single crystals described.

Magnetic phase transitions influenced by anisotropy competition.

Abstract

Data about stability areas of Nd1-xDyxFe3(BO3)4 trigonal phases in fluxes on the bismuth trimolibdate basis and feature of labile phase dynamics conditions is noted. Group growth conditions of these phases single crystals on seeds and at spontaneous nucleation in a thin layer of flux on crystal carrier are described. Temperature and field dependences of magnetization and a specific heat for crystals with x = 0,1 and x = 0,25 are analyzed. The conclusion, that unlike easy plane NdFe3(BO3)4 antiferromagnetic and easy axis DyFe3(BO3)4 ones, spontaneous spin-flop transitions are inherent in these single crystals is resulted and it is connected with mutual influence of rare-earth subsystems through the common Fe-subsystem with strong exchange interaction. The anisotropies competition exerts essential influence on induced by field H parallel c3 magnetic phase transitions too.