Cerium and rhodium substitution in the antiferromagnetic superconductor cerium rhodium indium(5)

Among heavy fermion materials, a relationship between unconventional superconductivity and magnetism has been observed. The dependence of the magnetic transitions of CexLa1-xRhyIr1-y In5 with respect to temperature and magnetic field applied along the tetragonal c and a crystal axes is examined using heat capacity measurements. The magnetic phase diagram of CeRh yIrl-yIn5 for the applied transitions in the a direction shows the magnetic structure of CeRhIn5 is unchanged by Ir doping. Doping of Ir in small concentrations is shown to increase the antiferromagnetic transition temperature TN. La doping or higher concentration of Ir is shown to lower TN. This shows the RKKY interaction, which leads to long range order in CeRhIn5, is of the same magnitude as the Kondo effect. The high temperature tail of the nuclear Schottky peak is seen in all of the data and can be accurately separated to identify the Ce f-electron contribution to the magnetic heat capacity.

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Physics

Grantor dc:publisher

University of Nevada, Las Vegas

Year

2002

Author dc:creator

• Light, Brian Edward

Contributors dc:contributor

• Andrew Cornelius

Statement dc:rights

• IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

Language dc:language

English

Identifier

https://oasis.library.unlv.edu/rtds/1435

OAI identifier oai:identifier

oai:oasis.library.unlv.edu:rtds-2434