The Role of Crystal Growth Conditions on the Magnetic Properties of LnFeCo Sb (Ln = La and Ce).

Single crystals of LnFeCo SbBi (Ln = La, Ce; 0 ≤ x < 0.5; 0 ≤ y ≤ 0.2) were grown using Bi flux and self-flux methods.

Spin density wave instability in a ferromagnet.

Due to its cooperative nature, magnetic ordering involves a complex interplay between spin, charge, and lattice degrees of freedom, which can lead to strong competition between magnetic states. Binary FeGa is one such material that exhibits competing orders having a ferromagnetic (FM) ground state, an antiferromagnetic (AFM) behavior at intermediate temperatures, and a conspicuous re-entrance of the FM state at high temperature. Through a combination of neutron diffraction experiments and simulations, we have discovered that the AFM state is an incommensurate spin-density wave (ISDW) ordering generated by nesting in the spin polarized Fermi surface.

Anomalous Metamagnetism in the Low Carrier Density Kondo Lattice YbRhSi.

We report complex metamagnetic transitions in single crystals of the new low carrier Kondo antiferromagnet . Electrical transport, magnetization, and specific heat measurements reveal antiferromagnetic order at . Neutron diffraction measurements show that the magnetic ground state of is a collinear antiferromagnet, where the moments are aligned in the plane.

Casting a Wider Net: Rational Synthesis Design of Low-Dimensional Bulk Materials.

The discovery of novel magnetic and electronic properties in low-dimensional materials has led to the pursuit of hierarchical materials with specific substructures. Low-dimensional solids are highly anisotropic by nature and show promise in new quantum materials leading to exotic physical properties not realized in three-dimensional materials. We have the opportunity to extend our synthetic strategy of the flux-growth method to designing single crystalline low-dimensional materials in bulk.

Emergence of Magnetic States in Pr2Fe(4-x)Co(x)Sb5 (1 < x < 2.5).

Single crystals of Pr2Fe(4-x)Co(x)Sb5 (1 < x < 2.5) were grown from a Bi flux and characterized by X-ray diffraction. The compounds adopt the La2Fe4Sb5 structure type (I4/mmm).