Paramagnetic to ferromagnetic phase transition in lightly Fe-doped Cr2 B

Schoop L, Hirschberger M, Tao J, Felser C, Ong NP, Cava RJ (2014)

Publication Type: Journal article

Publication year: 2014

Journal

Physical Review B - Condensed Matter and Materials Physics American Physical Society (APS)

Book Volume: 89

Article Number: 224417

Journal Issue: 22

DOI: 10.1103/PhysRevB.89.224417

Abstract

Cr2B displays temperature-independent paramagnetism. We induce ferromagnetism by replacing less than 3% of the Cr atoms by Fe. By the lowest Fe doping level made, Curie-Weiss behavior is observed; ΘCW changes from -20K for 0.5% Fe-doped Cr2B to positive values of about 50 K by 5% Fe doping. The ferromagnetic TC is 8 K for 2.5% Fe doping and increases linearly to 46 K by 5% doping; we infer that a quantum phase transition occurs near the 2.0% Fe level. Magnetic fluctuations at the intermediate doping levels are reflected in the linear resistance and an anomalous heat capacity at low temperatures. Imaging and chemical analysis down to the atomic scale show that the Fe dopant is randomly distributed. © 2014 American Physical Society.

Involved external institutions

Princeton University US United States (USA) (US) Brookhaven National Laboratory US United States (USA) (US) Max-Planck-Institut für Chemische Physik fester Stoffe (MPI CPfS) / Max Planck Institute for Chemical Physics of Solids DE Germany (DE)

How to cite

APA:

Schoop, L., Hirschberger, M., Tao, J., Felser, C., Ong, N.P., & Cava, R.J. (2014). Paramagnetic to ferromagnetic phase transition in lightly Fe-doped Cr2 B. Physical Review B - Condensed Matter and Materials Physics, 89(22). https://doi.org/10.1103/PhysRevB.89.224417

MLA:

Schoop, Leslie, et al. "Paramagnetic to ferromagnetic phase transition in lightly Fe-doped Cr2 B." Physical Review B - Condensed Matter and Materials Physics 89.22 (2014).

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