(JP6122571-A)      Sintered porous prod. comprises La manganite contg. Fe 40 ppm or less, where La atoms are partly substituted with metal atoms of alkali earth or rare earth element. The dimensional shrinkage due to the heat cycle between room temp. and 100 is 0.01% or less per cycle.    USE -   Used for making air electrodes of fuel cells.    (JP6183856-A)      Sintered porous prod. comprises a sintered La manganite prod.; part of La atoms are substd. by alkali earth or rare earth metal atoms and the dimensional shrinkage is 0.01% or less per heat cycle between room temp. and 1000 deg. C.    USE -   Used for making air electrodes of fuel cells.    (JP6287048-A)      A porous sintered body is composed of lanthanum manganite in which a part of lanthanum atoms at A-sites are substd. by atoms of a metal selected from alkaline earth metals and rare earth metals. A dimensional shrinkage of the sintered body caused by heat cyclings between room temp. and 1000 deg.C is not more than 0.01% for one heat cycle.    USE/ADVANTAGE -   Used for a solid oxide fuel cell comprising an air electrode. Cracking will not occur between the air electrode and the other constituent materials.    (JP6316471-A)      Porous sintered material of porosity 5-40% is composed of lanthanum manganite where 0.02-20% of Mn atoms in B sites are substd. by Al, Co, Mg or Ni, or Mn atoms in A site are substd. by Co or St. The shrinkage caused by a heat cycle of room temp.-1000 deg. C is less than 0.01% cycle.    ADVANTAGE -   The substitution of other metals for Mn aids prevention of shrinking and cracking.    (US5432024-A)      A porous self-supporting sintered body of lanthanum manganite in which some of the lanthanum atoms at A-sites are substituted by atoms of alkaline earth metals or rare earths. Dimensional shrinkage of the body caused by thermal cycling between room temp. and 1,000 degrees C does not exceed 0.01% per heat cycle.    USE/ADVANTAGE -   The sintered bodies are used in solid oxide fuel cells. The materials have enhanced dimensional stability when subjected to thermal cycling.    (JP2529073-B2)      A porous sintered body is composed of lanthanum manganite in which a part of lanthanum atoms at A-sites are substd. by atoms of a metal selected from alkaline earth metals and rare earth metals. A dimensional shrinkage of the sintered body caused by heat cyclings between room temp. and 1000 deg.C is not more than 0.01% for one heat cycle.    USE/ADVANTAGE -   Used for a solid oxide fuel cell comprising an air electrode. Cracking will not occur between the air electrode and the other constituent materials.    (JP2591897-B2)      A porous sintered body is composed of lanthanum manganite in which a part of lanthanum atoms at A-sites are substd. by atoms of a metal selected from alkaline earth metals and rare earth metals. A dimensional shrinkage of the sintered body caused by heat cyclings between room temp. and 1000 deg.C is not more than 0.01% for one heat cycle.    USE/ADVANTAGE -   Used for a solid oxide fuel cell comprising an air electrode. Cracking will not occur between the air electrode and the other constituent materials.    (JP2846559-B2)      A porous sintered body is composed of lanthanum manganite in which a part of lanthanum atoms at A-sites are substd. by atoms of a metal selected from alkaline earth metals and rare earth metals. A dimensional shrinkage of the sintered body caused by heat cyclings between room temp. and 1000 deg.C is not more than 0.01% for one heat cycle.    USE/ADVANTAGE -   Used for a solid oxide fuel cell comprising an air electrode. Cracking will not occur between the air electrode and the other constituent materials.    (EP593281-B1)      A porous sintered body is composed of lanthanum manganite in which a part of lanthanum atoms at A-sites are substd. by atoms of a metal selected from alkaline earth metals and rare earth metals. A dimensional shrinkage of the sintered body caused by heat cyclings between room temp. and 1000 deg.C is not more than 0.01% for one heat cycle.    USE/ADVANTAGE -   Used for a solid oxide fuel cell comprising an air electrode. Cracking will not occur between the air electrode and the other constituent materials.