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et al.Magnetic and magnetocaloric properties of single-crystalline Er 5Si 4 have been investigated as a function of the applied magnetic field (up to 50 kOe) and the hydrostatic pressure (up to 10 kbar) in the 5-300 K temperature range along the three main crystallographic directions. The magnetization isotherms show a highly anisotropic behavior with the easy-magnetization direction along the b axis for the low-pressure monoclinic and high-pressure orthorhombic structures, in good agreement with previous neutron scattering experiments. Below T C, the approach to the saturation shows a steplike behavior when the magnetic field is applied along the hard directions. The steps are sharper as the pressure increases. At constant magnetic field change, increasing the pressure induces a highly anisotropic enhancement of the magnetic entropy change. An enhancement of 20% is observed along the easy axis b, where the magnetic entropy change is maximum. The different evolution of the magnitude and temperature dependence of the magnetocaloric effect along the three crystallographic directions with pressure is discussed. © 2012 American Physical Society.Work at the University of Zaragoza was supported by the Spanish Ministry of Science (MAT2008-06567-C02) and Spanish DGA (Grant No. E26). N. Marcano acknowledges Spanish CSIC (JAE-doc program) for financial support. Work at the Ames Laboratory was supported by the Office of Basic Energy Sciences,Materials Sciences and EngineeringDivision of theOffice of Science of theUSDepartment of Energy. Ames Laboratory is operated by Iowa StateUniversity of Science and Technology for the US Department of Energy under Contract No. DE-AC02-07CH11358.Peer Reviewe

physical review. b, condensed matter and materials physics

Magnetism and magnetocaloric effect of single-crystal Er<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mn>5</mml:mn></mml:msub></mml:math>Si<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msub><mml:mrow /><mml:mn>4</mml:mn></mml:msub></mml:math>under pressure

Magnetism and magnetocaloric effect of single-crystal Er5Si4under pressure