Kotnana, Ganesh and J, Suryanarayana
(2018)
Magnetic properties and their correlation with lattice
dynamics in HoFe1-xCrxO3 (0 ≤ x ≤ 1) compounds.
PhD thesis, Indian Institute of Technology Hyderabad.
Abstract
Perovskites with general formula ABO3 (A is rare earth ion or Yttrium and
B is a transition metal) have been the most versatile compounds in oxide
research. Among various perovskite oxides, rare earth orthoferrite (RFeO3)
and orthochromite (RCrO3) compounds with distorted perovskite structure
have drawn considerable attention due to their unique physical properties
and potential applications. Among RFeO3 compounds, holmium orthoferrite
(HoFeO3) has been studied extensively for ultrafast recording applications.
The crystal structure of HoFeO3 is orthorhombic with a space group of
Pbnm at room temperature and possesses G-type antiferromagnetic with a
magnetic ordering temperature (TN) around 641 K. Apart from TN, HoFeO3
exhibits the spin reorientation (SR) transition of Fe3+ at 50 - 60 K.
According to Goodenough-Kanamori theory, Cr3+ is best choice for Fe3+ to
show superior magnetic properties due to super exchange interactions, which
may exhibit interesting magnetic properties and lattice dynamics. Hence, in
this thesis we explored the structural, magnetic properties and their
correlation with lattice dynamics in HoFe1- xCr xO 3 (0 ≤ x ≤ 1) compounds.
[error in script]
| IITH Creators: |
| IITH Creators | ORCiD |
|---|
| J, Suryanarayana | UNSPECIFIED |
|
| Item Type: |
Thesis
(PhD)
|
| Uncontrolled Keywords: |
Orthoferrite, Spin-Phonon Coupling, Spin Reorientation, Magnetism |
| Subjects: |
Physics |
| Divisions: |
Department of Physics |
| Depositing User: |
Team Library
|
| Date Deposited: |
04 Jul 2018 10:24 |
| Last Modified: |
21 Sep 2019 06:18 |
| URI: |
http://raiithold.iith.ac.in/id/eprint/4182 |
| Publisher URL: |
|
| Related URLs: |
|
Actions (login required)
 |
View Item |
Altmetric
Altmetric