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High Temperature Magnetic Ordering in the4dPerovskiteSrTcO3
Physical Review Letters
We present evidence for possibly the highest magnetic ordering temperature in any compound without 3d transition elements. Neutron powder diffraction measurements, at both time-of-flight and constant wavelength sources, were performed on two independently prepared SrTcO3 powders. SrTcO3 adopts a distorted perovskite structure with G-type antiferromagnetic ordering and has a moment of 1.87(4) µB per Tc cation at room temperature with an extraordinarily high Néel point close to 750 • C.doi:10.1103/physrevlett.106.067201 pmid:21405490 fatcat:i2sjuqbyvnfnhlws734y2os3gy