NOTICE: Due to a lapse in annual appropriations, most of this website is not being updated. Learn more.
Form submissions will still be accepted but will not receive responses at this time. Sections of this site for programs using non-appropriated funds (such as NVLAP) or those that are excepted from the shutdown (such as CHIPS and NVD) will continue to be updated.
An official website of the United States government
Here’s how you know
Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
Zinc Doped Copper Ferrite Particles as Temperature Sensors for Magnetic Resonance Imaging
Published
Author(s)
Karl Stupic, Janusz H. Hankiewicz, Zbigniew Celinski, Robert E. Camley, Marek Przybylski, Jan Zukrowski, Nick Anderson, Noweir Alghamdi, Nicholas Hammelev
Abstract
We investigate the use of Cu0.35Zn0.65Fe2O4 particles as temperature-dependent sensors in magnetic resonance imaging (MRI). This material has a Curie temperature near 290 K, but in the large magnetic fields found in MRI scanners there is a significant temperature-dependent magnetic moment near body temperature, 310 K. When the ferrite particles are doped into an agar gel, the temperature-dependent magnetic moment leads to a temperature-dependent broadening of the NMR linewidth for water protons and to a temperature-dependent image intensity for MRI, allowing one to make temperature maps within objects. The temperature resolution is about 1.3 K.
Stupic, K.
, Hankiewicz, J.
, Celinski, Z.
, Camley, R.
, Przybylski, M.
, Zukrowski, J.
, Anderson, N.
, Alghamdi, N.
and Hammelev, N.
(2017),
Zinc Doped Copper Ferrite Particles as Temperature Sensors for Magnetic Resonance Imaging, AIP Advances, [online], https://doi.org/10.1063/1.4973439, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=921935
(Accessed October 9, 2025)