121 citations · 203 across the 3 of their papers we have counts for
7 papers
Structural change and phase coexistence upon magnetic ordering in the magnetodielectric spinel MnO
Moureen C. Kemei, Jaye K. Harada, Ram Seshadri +1
Cooperative Jahn-Teller ordering is well-known to drive the cubic to tetragonal 4/ structural distortion in MnO at 1170 C. Further s…
Structural distortion below the Néel temperature in spinel GeCoO
Phillip T. Barton, Moureen C. Kemei, Michael W. Gaultois +5
A structural phase transition from cubic to tetragonal 4/ symmetry with 1 is observed at = 16 K in spinel GeCoO below the Néel…
Structural ground states of ()CrO(=Mg, Zn; = Co, Cu) spinel solid solutions: Spin-Jahn-Teller and Jahn-Teller effects
Moureen C. Kemei, Stephanie L. Moffitt, Lucy E. Darago +5
We examine the effect of small amounts of magnetic substituents in the sites of the frustrated spinels MgCrO and ZnCrO. Specifically we look for the effects of…
Magnetocapacitance as a sensitive probe of magnetostructural changes in NiCrO
Taylor D. Sparks, Moureen C. Kemei, Phillip T. Barton +3
The spinel NiCrO is characterized using dielectric and high magnetic field measurements. The trends in the magnetodielectric response fall into three clear temperature regi…
Crystal structures of spin-Jahn-Teller ordered MgCr_2O_4 and ZnCr_2O_4
Moureen C. Kemei, Phillip T. Barton, Stephanie L. Moffitt +5
Magnetic ordering in the geometrically frustrated magnetic oxide spinels MgCr_2O_4 and ZnCr_2O_4 is accompanied by a structural change that helps relieve the frustration. Analysis…
Spin-induced symmetry breaking in orbitally ordered NiCr_2O_4 and CuCr_2O_4
Matthew R. Suchomel, Daniel P. Shoemaker, Lynn Ribaud +2
At room temperature, the normal oxide spinels NiCr_2O_4 and CuCr_2O_4 are tetragonally distorted and crystallize in the I4_1/amd space group due to cooperative Jahn-Teller ordering…