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2006

University of New Hampshire

Antiferromagnetism

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Thermal Expansion And Magnetostriction Of The Ising Antiferromagnet Tbni2ge2, G M. Schmiedeshoff, Shawna M. Hollen, S L. Budko, P C. Canfield Jan 2006

Thermal Expansion And Magnetostriction Of The Ising Antiferromagnet Tbni2ge2, G M. Schmiedeshoff, Shawna M. Hollen, S L. Budko, P C. Canfield

Physics Scholarship

We have measured the linear thermal expansion and magnetostriction of the Ising antiferromagnet TbNi2Ge2 along its c-axis from room temperature to 2 K and in magnetic fields to 14 T. We find a magnetic phase diagram that agrees with earlier work and estimate aspects of its uniaxial pressure dependence. We also find a new high field feature near 10 T which may signal the onset of an additional field-induced phase.