Pressure-induced tuning of a magnetic phase separation in Nd0.53Sr0.47MnO3

Journal Article · Sun Jan 01 00:00:00 EST 2012 · Physical Review B

DOI:https://doi.org/10.1103/PhysRevB.86.094407· OSTI ID:1086659

Baldini, Maria ^[1]; Ding, Yang ^[1]; Wang, Shibing ^[2]; Lin, Yu ^[2]; Tulk, Christopher A ^[3]; Moreira Dos Santos, Antonio F ^[3]; Mitchell, John F. ^[4]; Haskel, D. ^[4]; Mao, Wendy ^[2]

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1. Advanced Photon Source, Argonne National Laboratory
2. Stanford University
3. ORNL
4. Argonne National Laboratory (ANL)

X-ray magnetic circular dichroism and neutron diffraction measurements were conducted in situ at high pressure and low temperature to investigate the evolution of the magnetic properties of Nd0.53Sr0.47MnO3 (NSMO47). The neutron diffraction data provide the experimental evidence for the presence of antiferromagnetic domains within the conducting ferromagnetic host at ambient pressure. The antiferromagnetic phase becomes dominant above 3 GPa with a concomitant reduction of the FM phase. Those findings indicate that the magnetic ground state of NSMO47 is more complex than previously reported, confirming the coexistence of competing phases over the doping range in which colossal magnetoresistance is observed. We also find that magnetic phase separation in the form of domains appears to be an intrinsic phenomenon at high pressure.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Spallation Neutron Source (SNS)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1086659
• Journal Information: Physical Review B, Vol. 86, Issue 9; ISSN 1098--0121
• Country of Publication: United States
• Language: English

Related Subjects

Manganites
High Pressure
Neutron Diffraction
XMCD