Table of contents Ferroelectrics and related substances Subvolume B2:  	Inorganic substances other than oxides (NH4)2SO4 family ... K3BiCl6  2KCl  KH3F4 I Introduction [T. Mitsui, E. Nakamura]
IA General remarks . . . . . . . ..... .. ... .. .. .. ... .. .. ... .. .. .. . 1
IB Definition of ferroelectrics and antiferroelectrics . . . . . . . . . . . . . . . . . . . . . . . 1
IC Remarks on some fundamental concepts and quantities .. ... .. .. ... .. .. .. . 3
ID Survey of history of ferroelectrics research . . . . . . . . . . . . . . . . . . . . . . . . . . 3
IE Symbols and units .. .. .. ... .. .. ... .. .. .. ... .. .. ... .. .. .. . 5
IF Survey of contained data. . . ... .. .. ... .. .. .. ... .. .. ... .. .. .. . 14
IG Outline of all subvolumes of III/36 .. .. ... .. .. .. ... .. .. ... .. .. .. . 23
IH References . ... .. .. .. ... .. .. ... .. .. .. ... .. .. ... .. .. .. . 26
II Data 39 (NH4)2SO4 family [K. Deguchi, K. Hasebe, K. Gesi, T. Asahi] .... .. ... .. .. .. . 27
40 NH4HSO4 family [T. Yagi] . ... .. .. ... .. .. .. ... .. .. ... .. .. .. . 193
41 NH4LiSO4 family [T. Yagi] . ... .. .. ... .. .. .. ... .. .. ... .. .. .. . 233
42 (NH4)3H(SO4)2 family [K. Gesi].. .. .. ... .. .. .. ... .. .. ... .. .. .. . 275
43 Langbeinite-type family [T. Hikita] .. .. ... .. .. .. ... .. .. ... .. .. .. . 289
44 Lecontite (NaNH4SO4  2H2O) family [M. Komukae, T. Osaka] . . . . . . . . . . . . . . . 338 
45 Alum family [M. Komukae, T. Osaka] . . . ... .. .. .. ... .. .. ... .. .. .. . 348
46 GASH (C(NH2)3Al(SO4)2  6H2O) family [K. Gesi] . . . . . ... .. .. ... .. .. .. . 371
47 Colemanite (Ca2B6O11  5H2O) [M. Komukae, T. Osaka] .. ... .. .. ... .. .. .. . 392
48 K4Fe(CN)6  3H2O family [M. Komukae, T. Osaka] . . . . . ... .. .. ... .. .. .. . 395
49 K3BiCl6 2KCl  KH3F4 [Y. Shiozaki]. . . ... .. .. .. ... .. .. ... .. .. .. . 404
M Miscellaneous crystals 
M15 SnTe group [Y. Akishige] ..... .. .. ... .. .. .. ... .. .. ... .. .. .. . 407
M16 PbN6 [E. Nakamura]. . . . . ... .. .. ... .. .. .. ... .. .. ... .. .. .. . 421
M17 Sb2S3 [T. Yagi].. .. .. .. ... .. .. ... .. .. .. ... .. .. ... .. .. .. . 422
M18 Sb5O7I [T. Yagi] . . . . . . . ... .. .. ... .. .. .. ... .. .. ... .. .. .. . 424
M19 H2O [N. Nakatani] .. .. .. ... .. .. ... .. .. .. ... .. .. ... .. .. .. . 428
X Table of Contents M20 KOH group [E. Nakamura] . ..... .. ... .. .. .. ... .. .. ... .. .. .. . 438
M21 KSCN [E. Nakamura] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 450 
M22 Na3Sc2(PO4)3 [E. Nakamura] ... .. .. ... .. .. .. ... .. .. ... .. .. .. . 453
M23 H2(UO2)2(AsO4)2  8H2O [E. Nakamura] . ... .. .. .. ... .. .. ... .. .. .. . 455
M24 Li(N2H5)SO4 group [E. Nakamura] .. .. ... .. .. .. ... .. .. ... .. .. .. . 456
M25 N(CH3)4HSO4  H2O [E. Nakamura].. .. ... .. .. .. ... .. .. ... .. .. .. . 459
M26 Ag2H3IO6 group [E. Nakamura] . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 460 
M27 TlNbWO6  nH2O [E. Nakamura] . . . . . ... .. .. .. ... .. .. ... .. .. .. . 465
M28 NH4PF6  NH4F [E. Nakamura] .. .. .. ... .. .. .. ... .. .. ... .. .. .. . 467
III Alphabetical index of substances IIIA Pure compounds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 469
IIIB Solid solutions .. .. .. .. ... .. .. ... .. .. .. ... .. .. ... .. .. .. . 481

IF Survey of contained data 
Each chapter of this volume corresponds to one family consisting of similar substances. This Subvolume B contains 30 families of inorganic substances other than oxides and thus 30 chapters, as listed in Table IG-1. Each section in a chapter is devoted to describing properties of one substance (pure compound or solid solution). Table IF-1 shows how the data are presented in each section: A section is divided into 16 subsections and each subsection gives the data on special properties (e.g., dielectric properties). The information given in each section is surveyed by a table at the beginning of the section according to the order of subsections 1...16 of Table IF-1. 
A detailed two-dimensional survey of contained data is made in Table IF-2 which gives all the substances appearing in the subvolumes B along the ordinate and properties along the abscissa. 
Table IF-1. Arrangement of data for each substance 
Subsection Information 
History and fundamental quantities. a History (discoverer, year of discovery). b Fundamental quantities (phases, state (F, A, P), crystal system, space group of each phase, 
transition temperatures, direction of spontaneous polarization, melting point, density, transparency and color, cleavage plane, deliquescence and efflorescence, phase diagram for solid solution). 
Material preparation and crystal growth. a Method, solubility in fluxes or solvents. b Crystal forms, a, b, c axes, X, Y, Z axes. 
Crystal structure. a Unit cell parameters. b Crystal structure (Z, table of positional and temperature parameters, interatomic distances 
and bond angles, figure of crystal structures, structural change associated with phase transitions). 
Lattice distortions (thermal expansion, lattice deformation associated with spontaneous polarization). 
5 Dielectric properties. a Dielectric constants (. vs. T, Curie-Weiss law constants, . vs. p, . vs. two- or one
dimensional pressure, . vs. frequency, phase diagram in regard to p and Ebias).
b Nonlinear dielectric properties (effect of Ebias on ., values of .and .).
c Spontaneous polarization and coercive field (or critical field for antiferroelectrics). 
d Pyroelectric and electrocaloric effect. 

Thermal properties. a Heat capacity, transition heat, transition entropy. b Thermal conductivity. 
7 Electromechanical properties. 
a Piezoelectricity. 
b Electrostriction. 
c Nonlinear electromechanical properties. 
(continued) 
 La ndolt-B rnstein New Series III/36B 
Table IF-1 (continued) 

Subsection Information 

Elastic properties. a Elastic compliances and stiffnesses (including data on acoustic surface wave). b Nonlinear elastic properties. 
9 Optical properties. a Refractive indices, birefringence, reflection, absorption (infrared region, visible region, 
ultraviolet region). 
b Electrooptic effect. 
c Piezooptic effect (photoelastic effect). 
d Optical activity (rotatory power), Faraday effect. 
e Nonlinear optical properties. 

Properties studied by light scattering. 
a Raman scattering. 
b Brillouin scattering and Rayleigh scattering. (Elastic constants are given in 8a.) 
Electrical conduction (conductivity, breakdown strength, thermoelectric effect, photoconductivity and photoemission, superconductivity, band structure). 
Magnetic properties (magnetic susceptibility, spontaneous magnetization, magnetic structure, magnetoelectric effect). 
13 Properties studied by magnetic resonance and Mssbauer effect. a NMR. b ESR and ENDOR. c Mssbauer effect. 
14 Diffraction phenomena related with secondary structures and local structures. a Bragg reflections due to structural modulations. b Diffuse or inelastic scattering. c EXAFS. 
15 Domains. 
a Domain structure. 
b Effects of electric field and mechanical stress. 
Miscellanea (thin layer, surface layer, radiation damage, plasticity, dislocation, etchant, point defects, twin structure, stripe pattern, paraelectric resonance). 

Table IF-2. Two-dimensional survey of contained data 
This table indicates the pages where the required data for special properties and individual substances can be found. All the substances appearing in the subvolumes III/36B are given along the ordinate and properties along the abscissa. More detailed information on the properties can be found in Table IF-1. Abbreviations in this table: [F]: ferroelectric. [(F)]: possibility of ferroelectricity. [A]: antiferroelectric. [(A)]: possibility of antiferroelectricity. 
Subvolume III/36B2   Material preparation  Dielectric properties  Thermal properties  Electromechanical Optical properties  
No. Substance  No. Fundamentals  Crystal structure  Lattice distortion  Elastic properties  Light scattering Conduction  Magnetism NMR, ESR  Local structures  Domains Miscellanea  
39 (NH4)2SO4 family  
39A Pure compounds  
1 (NH4)2SO4 [F]  39A-01                      
2 K2SeO4 [F]  39A-02                  
3 (NH4)2BeF4 [F]  39A-03                
4 [N(CH3)4]2MnCl4  39A-04              
5 [N(CH3)4]2FeCl4 [F]  39A-05              
6 K2CoCl4 [F]  39A-06          
7 Rb2CoCl4 [F]  39A-07                  
8 [N(CH3)4]2CoCl4 [F]  39A-08                  
9 K2ZnCl4 [F]  39A-09                    
10 Rb2ZnCl4 [F]  39A-10                    
11 (NH4)2ZnCl4 [F]  39A-11                
12 [N(CH3)4]2ZnCl4 [F]  39A-12                      
13 K2CoBr4 [F]  39A-13          
14 Rb2CoBr4 [F, (A)]  39A-14          
15 [N(CH3)4]2CuBr4 [F]  39A-15            
16 K2ZnBr4 [F]  39A-16            
17 Rb2ZnBr4 [F, (A)]  39A-17                    
18 (NH4)2ZnBr4 [F]  39A-18            
19 K2CoI4 [F]  39A-19        
20 K2ZnI4 [F]  39A-20        
21 Tl2ZnI4 [F]  39A-21          
22 [N(CH3)4]2ZnI4 [F]  39A-22                  
39B Solid solutions  
1 (NH4)2SO4K2SO4  39B-01            
2 (NH4)2SO4Rb2SO4  39B-02            
3 (NH4)2SO4Cs2SO4  39B-03          
4 (NH4)2SO4(NH4)2BeF4  39B-04            
5 [N(CH3)4]2MnCl4[N(CH3)4]2ZnCl4  39B-05    

Subvolume III/36B2   Material preparation  Dielectric properties  Thermal properties  Electromechanical Optical properties  
No. Substance  No. Fundamentals  Crystal structure  Lattice distortion  Elastic properties  Light scattering Conduction  Magnetism NMR, ESR  Local structures  Domains Miscellanea  
6 [N(CH3)4]2CoCl4[N(CH3)4]2ZnCl4  39B-06    
7 K2ZnCl4Rb2ZnCl4  39B-07        
8 Rb2ZnCl4Cs2ZnCl4  39B-08    
9 (NH4)2ZnCl4(NH4)2ZnBr4  39B-09        
10 [N(CH3)4]2ZnCl4[N(CH3)4]2ZnBr4  39B-10            
11 [N(CH3)4]2CuBr4[N(CH3)4]2CuCl4  39B-11        
40 NH4HSO4 family  
40A Pure compounds  
1 KHSO4  40A-01    
2 RbHSO4 [F]  40A-02                      
3 CsHSO4  40A-03          
4 TlHSO4  40A-04    
5 NH4HSO4 [F]  40A-05                    
6 N(CH3)4HSO4 [(F)]  40A-06              
7 RbHSeO4 [F]  40A-07              
8 CsHSeO4  40A-08        
9 NH4HSeO4 [F]  40A-09                      
40B Solid solutions  
1 RbHSO4CsHSO4  40B-01    
2 RbHSO4RbHSeO4  40B-02      
3 CsHSO4NH4HSO4  40B-03      
4 NH4HSO4NH4HSeO4  40B-04      
5 RbHSeO4NH4HSeO4  40B-05      
41 NH4LiSO4 family  
41A Pure compounds  
1 NaLiSO4  41A-01      
2 KLiSO4  41A-02                

 La ndolt-B rnstein New Series III/36B  La ndolt-B rnstein New Series III/36B  La ndolt-B rnstein New Series III/36B 
Subvolume III/36B2   Material preparation  Dielectric properties  Thermal properties  Electromechanical Optical properties  
No. Substance  No. Fundamentals  Crystal structure  Lattice distortion  Elastic properties  Light scattering Conduction  Magnetism NMR, ESR  Local structures  Domains Miscellanea  
3 RbLiSO4 [F]  41A-03                  
4 CsLiSO4  41A-04              
5 NH4LiSO4 [F]  41A-05                      
6 CsRbSeO4 [F]  41A-06            
7 RbLiMoO4 [F]  41A-07        
8 CsLiMoO4 [F]  41A-08              
9 CsLiWO4 [F]  41A-09            
41B Solid solutions  
1 RbLiSO4CsLiSO4  41B-01      
2 RbLiSO4NH4LiSO4  41B-02      
42 (NH4)3H(SO4)2 family  
42A Pure compounds  
1 (NH4)3H(SO4)2 [F]  42A-01              
2 (NH4)3H(SeO4)2 [F]  42A-02                    
43 Langbeinite (K2Mg2(SO4)3) family  
43A Pure compounds  
1 (NH4)2Mg2(SO4)3  43A-01              
2 K2Mg2(SO4)3  43A-02                  
3 Rb2Mg2(SO4)3  43A-03        
4 K2Ca2(SO4)3  43A-04              
5 Rb2Ca2(SO4)3  43A-05          
6 (NH4)2Ca2(SO4)3  43A-06        
7 (NH4)2Mn2(SO4)3  43A-07          
8 K2Mn2(SO4)3  43A-08                  
9 K2Fe2(SO4)3  43A-09          
10 K2Co2(SO4)3 [(F)]  43A-10                  

Subvolume III/36B2   Material preparation  Dielectric properties  Thermal properties  Electromechanical Optical properties  
No. Substance  No. Fundamentals  Crystal structure  Lattice distortion  Elastic properties  Light scattering Conduction  Magnetism NMR, ESR  Local structures  Domains Miscellanea  
11 K2Zn2(SO4)3 [(F)]  43A-11              
12 K2Cd2(SO4)3  43A-12                    
13 (NH4)2Cd2(SO4)3 [F]  43A-13                
14 Rb2Cd2(SO4)3 [F]  43A-14                  
15 Tl2Cd2(SO4)3 [F]  43A-15                  
16 K2Mn2(BeF4)3  43A-16      
43B Solid solutions  
1 Tl2Cd2(SO4)3(NH4)2Cd2(SO4)3  43B-01          
2 (NH4)2Mn2(SO4)3(NH4)2Cd2(SO4)3  43B-02    
3 Tl2Cd2(SO4)3K2Cd2(SO4)3  43B-03      
4 (NH4)2Mn2(SO4)3K2Mn2(SO4)3  43B-04      
5 K2Mn2(SO4)3Tl2Mn2(SO4)3  43B-05        
6 (NH4)2Mn2(SO4)3(NH4)2Mn2(SeO4)3  43B-06        
7 Tl2Mn2(SO4)3Tl2Mn2(SeO4)3  43B-07    
8 K2Mn2(SO4)3K2Mn2(SeO4)3  43B-08      
44 NaNH4SO42H2O (lecontite) family  
44A Pure compounds  
1 NaNH4SO42H2O [F]  44A-01              
2 NaNH4SeO42H2O [F]  44A-02                  
44B Solid solution  
1 NaNH4SO42H2ONaNH4SeO42H2O  44B-01      
45 Alum (NH4Fe(SO4)212H2O) family  
45A Pure compounds  
1 NH4Al(SO4)212H2O [F]  45A-01        
2 NH4V(SO4)212H2O [F]  45A-02        
3 NH4Cr(SO4)212H2O [F]  45A-03        

Subvolume III/36B2   Material preparation  Dielectric properties  Thermal properties  Electromechanical Optical properties  
No. Substance  No. Fundamentals  Crystal structure  Lattice distortion  Elastic properties  Light scattering Conduction  Magnetism NMR, ESR  Local structures  Domains Miscellanea  
4 NH4Fe(SO4)212H2O [F]  45A-04            
5 NH4In(SO4)212H2O [F]  45A-05        
6 CH3NH3Al(SO4)212H2O [F]  45A-06              
7 CH3NH3V(SO4)212H2O [F]  45A-07        
8 CH3NH3Cr(SO4)212H2O [F]  45A-08            
9 CH3NH3Fe(SO4)212H2O [F]  45A-09          
10 CH3NH3Ga(SO4)212H2O [F]  45A-10          
11 CH3NH3In(SO4)212H2O [F]  45A-11        
12 CH3NH3Al(SeO4)212H2O [F]  45A-12            
13 CH3NH3Cr(SeO4)212H2O [F]  45A-13        
14 CH3NH3Ga(SeO4)212H2O [F]  45A-14        
15 N2H5Al(SO4)212H2O [F]  45A-15        
16 CO(NH2)2HCr(SO4)212H2O  45A-16    
45B Solid solutions  
1 CH3NH3Al(SO4)212H2O NH2NH3Al(SO4)212H2O  45B-01      
2 CH3NH3Al(SO4)212H2O CH3NH3Al(SeO4)212H2O  45B-02      
46 GASH (C(NH2)3Al(SO4)26H2O) family  
46A Pure compounds  
1 C(NH2)3Al(SO4)26H2O [F]  46A-01                            
2 C(NH2)3V(SO4)26H2O [F]  46A-02          
3 C(NH2)3Cr(SO4)26H2O [F]  46A-03          
4 C(NH2)3Ga(SO4)26H2O [F]  46A-04              
5 C(NH2)3Al(SeO4)26H2O [F]  46A-05              
6 C(NH2)3Cr(SeO4)26H2O [F]  46A-06        
7 C(NH2)3Ga(SeO4)26H2O [F]  46A-07                
8 (CH3)2NH2Al(SO4)26H2O [F]  46A-08            
9 (CH3)2NH2Ga(SO4)26H2O [F]  46A-09        

Subvolume III/36B2   Material preparation  Dielectric properties  Thermal properties  Electromechanical Optical properties  
No. Substance  No. Fundamentals  Crystal structure  Lattice distortion  Elastic properties  Light scattering Conduction  Magnetism NMR, ESR  Local structures  Domains Miscellanea  
46B Solid solution  
1 (CH3)2NH2Al(SO4)26H2O (CH3)2NH2Al(SeO4)26H2O  46B-01      
47 Colemanite (Ca2B6O115H2O)  
47A Pure compound  
1 Ca2B6O115H2O [F]  47A-01          
48 K4Fe(CN)63H2O family  
48A Pure compounds  
1 K4Mn(CN)63H2O [F]  48A-01      
2 K4Fe(CN)63H2O [F]  48A-02                          
3 K4Ru(CN)63H2O [F]  48A-03            
4 K4Os(CN)63H2O [F]  48A-04        
48B Solid solutions  
1 K4Fe(CN)63H2ORb4Fe(CN)63H2O  48B-01      
2 K4Fe(CN)63H2OTl4Fe(CN)63H2O  48B-02      
3 K4Fe(CN)63H2O (NH4)4Fe(CN)63H2O  48B-03      
49 K3BiCl62KClKH3F4  
49A Pure compound  
1 K3BiCl62KClKH3F4 [F]  49A-01          

Subvolume III/36B2 No. Substance  No.   Fundamentals    Material preparation    Crystal structure    Lattice distortion    Dielectric properties    Thermal properties  Electromechanical   Elastic properties    Optical properties    Light scattering   Conduction  Magnetism   NMR, ESR    Local structures  Domains Miscellanea  
M Miscellaneous crystals  
M15 SnTe group  
M15-i GeTe [(F)]  M15-i                
M15-ii SnTe [(F)]  M15-ii                  
M15-iii Ge1xSnxTe  M15-iii            
M15-iv Pb1xGexTe  M15-iv                      
M15-v Pb1xSnxTe  M15-v              
M15-vi Cd1xZnxTe  M15-vi                  
M16 PbN6  M16            
M17 Sb2S3 [F]  M17                      
M18 Sb5O7I [F]  M18            
M19 H2O [(F)]  M19                        
M20 KOH group  
M20-i NaOD [(A)]  M20-i                    
M20-ii KOH [(A)]  M20-ii              
M20-iii RbOH [(F)]  M20-iii                
M20-iv CsOH [(A)]  M20-iv                  
M21 KSCN [(A)]  M21                  
M22 Na3Sc2(PO4)3 [(F)]  M22                
M23 H2(UO2)2(AsO4)28H2O [(A,F)]  M23            
M24 Li(N2H5)SO4 group  
M24-i Li(N2H5)SO4  M24-i                
M24-ii Li(N2H5)BeF4  M24-ii            
M25 N(CH3)4HSO4H2O [(F)]  M25      
M26 Ag2H3IO6 group  
M26-i Ag2H3IO6 [(A)]  M26-i              
M26-ii (NH4)2H3IO6 [(A)]  M26-ii                  
M27 TlNbWO6nH2O group  
M27-i RbNbWO6nH2O [(F)]  M27-i              
M27-ii TlNbWO6nH2O [(F)]  M27-ii              
M28 NH4PF6NH4F [(A)]  M28          



