Landolt-Brnstein Group III
: Condensed Matter
Volume 12 

Magnetic and Other Properties of Oxides and Related Compounds 
Subvolume C Part C
: Hexagonal Ferrites. Special Lanthanide and Actinide Compounds
5
Hexagonal ferrites (D. Bonnenberg, K.A. Hempel, W. Roos) 1 
5.0

Introduction 1 
5.1

Quantities and units 1 
5.2

List of symbols and abbreviations 5 
5.3 
Chemical compositions and phase diagrams of hexagonal ferrites (see Vol. 4B) 
5.4 
Crystal structures (see Vol. 4B) 
5.5

Paramagnetic properties of ferrites with hexagonal crystal structure 6 
5.6

M (magnetoplumbite)-type ferrites 7 
5.6.1

Survey of the chemical substitution in the M structure and room temperature lattice 7 
5.6.2

Electric and dielectric properties 10 
5.6.3

Mssbauer spectra, saturation magnetization and Curie temperature 10 
5.6.4 
Effective spectroscopic splitting factor geff (see Vol. 4B) 
5.6.5

Magneto-crystalline anisotropy 14 
5.6.6

Hysteresis properties 16 
5.6.7

High-frequency magnetic properties 17 
5.6.8

Magnetic domains 19 
5.7

W-type ferrites 20 
5.7.1

Survey of chemical substitutions in the W structure 20 
5.7.2

Electric and dielectric properties 21 
5.7.3

Saturation magnetization. Curie temperature and Mssbauer spectra 21 
5.7.4 
Effective spectroscopic splitting factor geff (see Vol. 4B) 
5.7.5

Magneto-crystalline anisotropy 23 
5.7.6

Magnetostriction 23 
5.7.7

High-frequency magnetic properties 23 
5.8

Y-type ferrites 24 
5.8.1

Survey of chemical substitutions in the Y structure 24 
5.8.2

Electric and dielectric properties 25 
5.8.3

Mssbauer spectra and saturation magnetization 25 
5.8.4

Magneto-crystalline anisotropy 25 



Introductory material 
constants 
5.8.4.1 
Magneto-crystalline anisotropy derived from static measurements 25

5.8.4.2 
Magneto-crystalline anisotropy field derived from ferromagnetic resonance frequency 26

5.8.5 
Hysteresis properties 27

5.8.6 
High-frequency magnetic properties 28

5.8.6.1 
Magnetic spectrum of the initial permeability 28

5.8.6.2 
Ferrimagnetic resonance properties 29

5.8.6.3 
Non-linear effects in the ferromagnetic resonance (see Vol. 4B) 
5.9 
Z-type ferrites 29

5.9.1 
Survey of chemical substitution in the Z structure 29

5.9.2 
Resistivity 30


5.9.3 
5.9.4 
5.9.5 
5.10 
5.11 
5.12 
5.13 
5.14 
5.15 
5.16 
6

6.0 
6.0.1 
6.0.2 
6.0.3 
Saturation magnetization and Curie temperature 
Magneto-crystalline anisotropy
High-frequency magnetic properties
U-type ferrites
Calcium ferrites
X-type ferrites
F-type ferrites
KFe11O17
Further hexagonal ferrites
References for 5

32 
32 
32 
33 
34 
34 
35 
36 
37 

Compounds with lanthanide and actinide elements of some special structure types 47

Introduction (W. Zinn) 47

General remarks 47

Arrangement of tables and figures 48

List of frequently used abbreviations and symbols; magnetic fields and units 50


6.0.3.1 
6.0.3.2 
6.0.3.3 
6.0.4 
6.1 
6.1.0 
6.1.0.1 
6.1.0.2 
6.1.1 
6.1.1.1 
6.1.1.2 
6.1.2 
6.1.3 
6.2 
6.2.1 
6.2.1.1 
6.2.1.2 
6.2.1.3 
6.2.1.4 
6.2.1.5 
6.2.2 
6.2.2.1 
6.2.2.2 
6.2.3 
6.2.4 
6.2.5 
Abbreviations 50

Symbols and units 52

Magnetic fields and units 55

General references 57

Rare earth compounds with elements of group V (N, P, As, Sb, Bi) 59

Introduction to rare earth compounds (W. Zinn) 59

General remarks 59

Special properties of rare earth compounds 63

NaCl-type compounds (P. Grnberg, H.J. Maletta) 67

Crystallographic, magnetic, optical, electrical, thermal, and mechanical properties 67

Crystal field data 88

Properties of compounds with miscellaneous structures 151

References for 6.1.1 and 6.1.2 155

Rare earth compounds with elements of group VI (O, S, Se, Te) 159

(U.
 Kbler, Ch. Sauer)NaCl-type compounds 159
binary compounds
crystal lattice
compounds

Properties of compounds with divalent rare earth elements 159

Properties of Eu-monochalcogenides 168

Critical data of Eu-monochalcogenides 173

Properties of compounds with trivalent rare earth elements 175

Properties of ternary systems 184

Th3P4-type compounds 267

Crystallographic, magnetic, optical, electrical, thermal, and mechanical properties of 267

Crystallographic, magnetic, electrical, and thermal properties of ternary compounds 289

Properties of trivalent and tetravalent oxides with structures derived from the CaF2-type 293

Crystallographic, magnetic, optical, electrical, and thermal properties of miscellaneous 349

References for 6.2 359



6.3	Rare earth hydrides (R.R. Arons) 372 
6.3.1	Rare earth hydrides with CaF2- and BiF2-type structures 372 
6.3.1.1	Range of homogeneity for RE hydrides with CaF2 and BiF3-type structures 372 
6.3.1.2	Crystallographic, magnetic, and electrical properties of CaF2- and BiF3-type 373 RE-H systems 
6.3.1.3	Crystal-field ground state of RE ions in CaF2-type RE hydrides 384 
6.3.2	REH3 alloys with the h.c.p. structure 381 
6.3.3	Dihydrides of Eu and Yb (orthorhombic structure) 383 
6.3.4	References for 6.3 404 
6.4	Actinide compounds with elements of group V 406 
6.4.0	Introduction to actinide compounds (W. Zinn) 406 
6.4.1	Crystallographic, magnetic, and electrical properties of NaCl-type compounds 411 
(R.R. Arons) 
6.4.2	Crystallographic, magnetic, and electrical properties of actinide pnictides with 438 miscellaneous structures 
6.4.3	References for 6.4.1 and 6.4.2 445 
6.5	Actinide compounds with elements of group VI (O, S, Se, Te) 448 
(H. Ltgemeier) 
6.5.1	Crystallographic, magnetic, and electrical properties of chalcogenides with 448 NaCl-type structure 
6.5.2	Crystallographic, magnetic, and electrical properties of CaF2-type oxides 451 
6.5.3	Crystallographic, magnetic, and electrical properties of oxides with miscellaneous 453 structures 
6.5.3.1	Crystallographic data of binary uranium oxides 453 
6.5.3.2	Magnetic and electrical properties of uranium oxides 454 
6.5.4	Crystallographic, magnetic, and electrical properties of chalcogenides with 455 miscellaneous structures 
6.5.5	Crystallographic, magnetic, and electrical properties of ternary compounds 459 
6.5.6	References for 6.5 482 
7	Index of substances for subvolumes 4a, b and 12a, b, c 485 
