Field tunable magnetic transitions of CsCo₂(MoO₄)₂(OH): a triangular chain structure with a frustrated geometry

Abstract

Identifying and characterizing new magnetic systems with Co2+ ions can enhance our understanding of quantum behavior since Co2+ can host a pseudospin-1/2 magnetic ground state. Understanding the magnetic ground state...

Large magnetic anisotropy of a decorated spin-chain system K2Co3(MoO4)3(OH)2

“…We observed a similar behavior in our previous study of the sawtooth system, CsCo 2 (MoO 4 ) 2 (OH). 14…”

“…Among these exotic materials, 2-D magnetic lattices including stripe Kagome and triangular stripe layers, and 1-D triangular spin chains such as sawtooth chains, half sawtooth chains, and triangular spin tubes are of particular interest because of their intriguing magnetic properties. [10][11][12][13][14][15][16][17][18] Competition between first, second, and third nearest neighbor magnetic exchange interactions often leads to rich magnetic phase diagrams of these materials. Moreover, these materials provide a platform to study the effect of the change of lattice dimensionality with different arrangements of the basic triangular magnetic building unit.…”

“…19,20 Among these materials, sawtooth and half sawtooth chains represent special classes of triangular 1-D compounds. [14][15][16][17] The sawtooth magnetic lattice is comprised of corner-sharing triangles pointing alternately in opposite directions in a sawtooth fashion along a 1-D chain, while in half-sawtooth chains these triangles sit on only one side of the 1-D chain. 14 Experimental realization of sawtooth and half-sawtooth lattice structures is scarce, but we recently made excellent progress in synthesizing these materials using a high-pressure high-temperature hydrothermal method.…”

“…[14][15][16][17] The sawtooth magnetic lattice is comprised of corner-sharing triangles pointing alternately in opposite directions in a sawtooth fashion along a 1-D chain, while in half-sawtooth chains these triangles sit on only one side of the 1-D chain. 14 Experimental realization of sawtooth and half-sawtooth lattice structures is scarce, but we recently made excellent progress in synthesizing these materials using a high-pressure high-temperature hydrothermal method. [14][15][16][17] Using this method, large single crystals can be grown that are suited not only to collect detailed anisotropic magnetic measurements, but also to perform single crystal neutron diffraction, thereby allowing a detailed understanding of the fundamental magnetic properties of these materials.…”

“…24,25 Oxyanion-based sawtooth lattices Rb 2 Fe 2 O(AsO 4 ) 2 , CsCo 2 (MoO 4 ) 2 (OH) and NaCo 2 (SeO 3 ) 2 (OH) exhibit complex and highly anisotropic magnetic properties. [14][15][16] On the other hand, the sawtooth structure euchroite-cuprate Cu 2 (AsO 4 )(OH) does not show any long-range magnetic ordering down to milli-K temperatures, suggesting a magnetic frustration due to the competing interactions in the frustrated S = 1/2 magnetic lattice. 26 So far, Rb 2 Mn 3 (MoO 4 ) 3 (OH) 2 and K 2 Mn 3 O(OH)(VO 4 ) (V 2 O 7 ) are the only candidates available as the half-sawtooth lattice.…”