title: Nonlinear pressure dependence of TN in almost multiferroic EuTiO3.
abstract: The antiferromagnetic (AFM) phase transition temperature TN of EuTiO3 has been studied as a function of pressure p. The data reveal a nonlinear dependence of TN on p with TN increasing with increasing pressure. The exchange interactions exhibit an analogous dependence on p as TN (if the absolute value of the nearest neighbor interaction is considered) and there is evidence that the AFM transition is robust with increasing pressure. The corresponding Weiss temperature ΘW remains anomalous since it always exhibits positive values. The data are analyzed within the Bloch power law model and provide excellent agreement with experiment.
authors: Physik-Institut der Universität Zürich, Winterthurerstrasse 190, CH-8057 Zürich, Switzerland.
authors: Z
authors: Z
authors: Guguchia
authors: K
authors: K
authors: Caslin
authors: R K
authors: RK
authors: Kremer
authors: H
authors: H
authors: Keller
authors: A
authors: A
authors: Shengelaya
authors: A
authors: A
authors: Maisuradze
authors: J L
authors: JL
authors: Bettis
authors: J
authors: J
authors: Köhler
authors: A
authors: A
authors: Bussmann-Holder
authors: M-H
authors: MH
authors: Whangbo
mesh_terms: D005063:Europium / Q000737:chemistry*; D005296:Ferrous Compounds / Q000737:chemistry*; D008280:Magnetics; D010087:Oxides / Q000737:chemistry*; D044367:Phase Transition; D011312:Pressure; D014025:Titanium / Q000737:chemistry*; D044366:Transition Temperature
chemical_list: D005296:Ferrous Compounds; D010087:Oxides; C552630:europium titanium trioxide; D005063:Europium; D014025:Titanium