Abstract
We present the first polarized neutron transmission image of a model Néel ferrimagnetic material, polycrystalline terbium iron garnet (Tb3Fe5O12, TbIG for short), as it is taken through its compensation temperature Tcomp where the macroscopic magnetization vanishes. Our polarized neutron imaging data and the additional supporting measurements using neutron spin echo spectroscopy and SQUID magnetometry are all consistent with a vanishing internal magnetization at Tcomp.
| Original language | English |
|---|---|
| Article number | 173273 |
| Journal | Journal of Magnetism and Magnetic Materials |
| Volume | 629 |
| DOIs | |
| State | Published - Oct 1 2025 |
Funding
The authors would like to acknowledge the contributions of Maren Pink at IU’s Molecular Structure Center for her help with the X-ray diffractometry. The diffractometry was primarily conducted on a Bruker Venture D8 diffractometer. Support for the acquisition of the Bruker Venture D8 diffractometer through the Major Scientific Research Equipment Fund from the President of Indiana University and the Office of the Vice President for Research is gratefully acknowledged. Additional diffractometry was conducted on a PANalytical Empyrean multipurpose diffractometer, which is supported by U.S. National Science Foundation (NSF) grant number CHE-1048613 . K. N. Lopez, M. Luxnat, M. Van Meter, S. Samiei, and W. M. Snow acknowledge support from U.S. National Science Foundation (NSF) grants PHY-1913789 and PHY-2209481 and the Indiana University Center for Spacetime Symmetries. K. N. Lopez also acknowledges the support of the National GEM Consortium and the Indiana Space Grant Consortium . M. Sarsour and T. Mulkey acknowledge support from U.S. Department of Energy (DOE) grant DE-SC0010443 . J. C. Long and B. Hill acknowledge support from US National Science Foundation (NSF) grant PHY-1707986 . The authors acknowledge the use of facilities and instrumentation supported by U.S. National Science Foundation (NSF) through the University of Illinois Materials Research Science and Engineering Center DMR-2309037 . This research used resources at the High Flux Isotope Reactor and the Spallation Neutron Source, both DOE Office of Science User Facilities operated by the Oak Ridge National Laboratory. The beam time was allocated to SNS-NSE on proposal number IPTS-29155 and MARS on proposal number IPTS-30635. This work was supported by the U.S. Department of Energy (DOE) , Office of Science, Office of Basic Energy Sciences, Early Career Research Program Award KC0402010 , under Contract DE-AC05-00OR22725. The authors would like to acknowledge the contributions of Maren Pink at IU's Molecular Structure Center for her help with the X-ray diffractometry. The diffractometry was primarily conducted on a Bruker Venture D8 diffractometer. Support for the acquisition of the Bruker Venture D8 diffractometer through the Major Scientific Research Equipment Fund from the President of Indiana University and the Office of the Vice President for Research is gratefully acknowledged. Additional diffractometry was conducted on a PANalytical Empyrean multipurpose diffractometer, which is supported by U.S. National Science Foundation (NSF) grant number CHE-1048613. K. N. Lopez, M. Luxnat, M. Van Meter, S. Samiei, and W. M. Snow acknowledge support from U.S. National Science Foundation (NSF) grants PHY-1913789 and PHY-2209481 and the Indiana University Center for Spacetime Symmetries. K. N. Lopez also acknowledges the support of the National GEM Consortium and the Indiana Space Grant Consortium. M. Sarsour and T. Mulkey acknowledge support from U.S. Department of Energy (DOE) grant DE-SC0010443. J. C. Long and B. Hill acknowledge support from US National Science Foundation (NSF) grant PHY-1707986. The authors acknowledge the use of facilities and instrumentation supported by U.S. National Science Foundation (NSF) through the University of Illinois Materials Research Science and Engineering Center DMR-2309037. This research used resources at the High Flux Isotope Reactor and the Spallation Neutron Source, both DOE Office of Science User Facilities operated by the Oak Ridge National Laboratory. The beam time was allocated to SNS-NSE on proposal number IPTS-29155 and MARS on proposal number IPTS-30635. This work was supported by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences, Early Career Research Program Award KC0402010, under Contract DE-AC05-00OR22725. Notice: This manuscript has been authored by UT-Battelle, LLC, under contract DE-AC05-00OR22725 with the U.S. Department of Energy (DOE). The U.S. government retains and the publisher, by accepting the article for publication, acknowledges that the U.S. government retains a nonexclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for U.S. government purposes. DOE will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan ( https://www.energy.gov/doe-public-access-plan ).
Keywords
- Ferrimagnetism
- Polarized neutron imaging
- Polarized neutron transmission
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